Chapter Text
Bruce was, honestly not all that busy today, which was rather surprising, just generally speaking, seeing as he is someone who leads a rather busy life- and one that is busy by design.
I mean, he chose to be a vigilante, he chose to adopt five children, he chose to form the Justice League. All three of these things require a lot of attention, and it works out, because, generally speaking, Bruce doesn't deal so well with idleness.
He deals even less well with boredom. Bruce doesn't need to deal with those things though, because he's fixed the problem, and he needs to deal with them even less sense he's started dating Clark.
Clark is a like minded individual, and more importantly, another vigilante, another superhero. He understands Bruce in a way no one else ever has, their shared experience in the field, their years-long friendship, and their shared profession mean that Clark has the first hand experience to understand Bruce even when Bruce himself can't.
He isn't surprised or angry when Bruce has to cancel a date because there's been another alien invasion, in fact Clark gets the same league notification, they make a date out of that instead.
He isn't mad when Bruce's enemy's put him in danger, because Clark's enemy's equally put Bruce in danger.
Which is one of the reasons Bruce has had even less days off sense he and Clark started dating. But today, he had a rare, easy day, so, he decided to head on over to Clark's for the day.
Now, it's not that unusual for him to make a detour to Metropolis after patrol, or even after some late business at WE but its rare that they get to spend the entire day together, so, sue him if he's a little bit excited.
He hasn't seen Clark in nearly a week and a half, so, the first thing he does when he walks through the door is going to involve a lot of kissing, that's the only thing he had decided as of right now, but he's sure the rest will come to him when he gets there, and if nothing dose, that's fine too. He enjoys just spending time with Clark, even if they're not doing anything.
The only mistake -if you could call it that: Bruce wouldn't- he had made, was not telling Clark he was coming over- now, it wasn't as if he was just breaking into his house, no, that would be rude, and Bruce is nothing but a gentleman to his lovers.
No, he didn't break in- or rather, Clark had given him explicit, blanket permission to come over whenever he had time to, even if the man of steel himself wasn't home, and then proceeded to give him a key to his apartment. So, after that, Bruce decided that, now that he finally had a day off, he would go over and surprise the younger man.
He didn't even think anything of it as he came to stand in front of the mans door, and he certainly didn't think anything of it when he pulled out his key and let himself inside.
He closed the door behind him and locked the deadbolt, putting the key back in his pocket and toeing off his shoes on the doormat (you don't wear shoes in a Kent's house, its a rule) and walked further into the apartment.
He didn't notice anything out of the ordinary right away: the house seemed completely and entirely normal, if a little quiet.
"Clark?" He called out. Because even if this whole thing was supposed to be a surprise. There was no point in being quiet when your boyfriend can hear your heartbeat from across the state.
There was no reply. Because of course there was no reply. This was Bruce's life, of course nothing would work correctly or go the easy way, that would just be out of character.
Bruce pulled a baterang out of his pocket and crept slowly further into the apartment, being quiet at this point to not alert any potential attackers of his position in the house.
He crept around the corner into the hallway. There was a soft noise, getting steadily louder as he got closer to the bedroom.
"Clark?" He called put again,this time a little bit louder, because he was worried, and he needed to appear as nothing more than a worried lover is he was to get the jump on any potential intruder.
He pressed his ear to the door, knocking his fist on it a couple times "Clark?" He says one more time. This time though, there's a yelp and a crash from inside the door.
So, Bruce kicks it down, rushing into the room, quickly scanning it for an attacker. He didn't find one, but he knew better than to put his baterang away, instead he looked to Clark to confirm whether he needed help or not.
But looking at Clark didn't clear anything up, he was in bed, his hair tousled presumably from sleep, but he didn't appear to be inured or restrained.
Bruce took another step inside, scanning the room for damage from a struggle of any kind, but he didn't find any.
He took another step forward, this time turning his attention towards Clark's face.
"Clark, are you alright?" he asked, still in a defensive stance, ready to attack.
Speaking directly to him seemed to snap Clark out of whatever trance he had been in. "Bruce I'm fine!" he said loudly, and there was something in his voice, that was different than normal, needless to say Bruce was skeptical.
"Then why didn't you answer when I called your name?" Bruce asked, he was confused, concerned, and a little annoyed as it felt like he was being left out of the loop.
Bruce hated being left out of the loop.
"I didn't hear you!" Clark shouted. Bruce couldn't help but furrow his brows.
"You didn't hear me?" He asks incredulously and rhetorically, his eyebrows raised in shock.
Clark just flushes red. his hands grabbing the sheets bunched at his waist in tight fists.
Bruce can't help but spell it out a bit more just from shock alone. somehow more concerned then he'd been when he'd believed someone was able to break into Clark's apartment and incapacitate him "Clark, you can hear someone crying for help from across the world, and you're telling me you couldn't hear me yelling your name from inside your apartment?"
Clark just flushed more, his cheeks turning as red as his heat vision.
Bruce's chest tightened "What's wrong with you, are you hurt?" he stepped closer, his eyes scanning Clark's entire body, looking for any visual signs of injury.
Clark was flushed, his breathing hard, quick and uneven, there was sweat on his brow and he was shaking, If Bruce didn't know Clark was Kryptonion he would have assumed that he had a bad case of the flu.
But Bruce did know better, he knew much better, at the moment he suspected poisoning of some kind, likely involving Kryptonite in some capacity, as there really aren't that many things that can make Clark this sick.
Before his brain could rush to any more conclusions, Clark spoke.
"I'm not hurt, I was just, distracted." Clark says, sheepishly, looking more embarrassed by the second.
Bruce takes a moment to reevaluate the situation at hand, taking all the data he has, attempting to discard his inherent bias's and look at the problem with a fresh set of eyes.
He takes another look at Clark, at the blanket he's holding onto like a lifeline scrunched up at his waist, the sweat dripping down his face, the red flush of blood pumping beneath his skin, his heavy breat-
Oh.
Bruce's eyebrows furrow, his mouth growing dry, uncertainty growing in his gut.
"Clark," he starts, just to get Clark to look towards him. "Are you….Masturbating?" he asks, keeping his voice from coming across as judgmental (as Jason has oh-so kindly informed him is his 'default setting' )
He thinks he succeeds, that, or Clark is just immune to his social ineptitude at this point in their relationship.
Clark just blushes, bunching the blankets further up on his -bare- waist.
"Yes." Clark said slowly, meekly.
Bruce nodded, slowly. Not actually sure what to do with the information he'd gained.
He wasn't sure how to navigate… this, with Clark.
Bruce was far from a blushing virgin, but, he and Clark, hadn't, done anything, yet.
He wasn't sure exactly, why, he's sure Clark's aware of both his, colorful… reputation and his feelings for Clark, perhaps Clark is just shy, or is someone only comfortable sharing that part of themselves with a spouse, but whatever the reason, he and Clark had not even touched on the idea of sex.
Which is why Bruce, wasn't immediately sure what the best next course of action would be. And why it took him just over 6 seconds to come up with the simplest one: leaving.
"I'll… leave you to it, then." he said stiffly, turning to leave.
But he suddenly stopped when his foot was halfway out the door, a puzzle piece clicking into place in his head. He turned back around. A concerning realization filling his head.
"Clark," he starts, he can feel the lines in his forehead grow deeper. his brow furrowing, growing more concerned than before, unease freely growing in his stomach. "Clark you don't sweat." he had the realization at the same time the words came out of his mouth. He immediately ran towards the side of Clark's bed, uncomfortable situation forgotten.
He placed the back of his hand on Clark's forehead feeling him for a fever. Now, Kryptonians always ran hot- like the sun on a warm summer day- but Clark at the moment was actually hot to the touch, Bruce would estimate around 110 degrees.
Bruce knows for a fact that Clark's average temperature it 105.6, which would mean he had at least a 5 degree fever.
Which, wasn't actually very helpful information, seeing as he wasn't sure what temperature was harmful to a Kryptonian but he wasn't about to take any chances.
"Were you exposed to something? any unknown substance?" both Clark shook his head to "Have you had any direct or indirect contact with Pamela Isly?" Once again Clark shook his head in the negative.
"Do you have any idea what's causing this?" And to that he got an affirmative nod.
Bruce just sort of stepped back, silently asking for Clark to explain further.
And after a moment he did.
Shifting uncomfortably on the bed, he reached a hand up to scratch at the back of his neck and spoke.
"Its, ah, completely natural." he said. As if explaining himself. As is there was something he needed to justify, it put Bruce in edge.
"Kal, what is 'It'" Bruce, not demanded, but asked forcefully.
Clark somehow managed to turn an even darker shade of red "It's an, enhanced mating period for Kryptonians"
There was a pause for a moment as Bruce's brain processes the information it'd been given.
"You're in heat." he deadpanned. Trying not to express his -appropriately and purely scientific- interest in Clark's condition.
"Yea." Clark confirmed, something strained in his voice,
"And this is… normal for Kryptonian males?"
Clark looked startled, a little embarrassed and somewhat confused. "… Are you asking if i can get pregnant Bruce?"
"I was asking if you had been cursed." Bruce corrected quickly, before speaking again, just to clarify. "…But my knowledge on Kryptonian anatomy and biology is sorely lacking, as there isn't much material on earth about the subject so-"
Clark cut him off before ge could finish."-I can't get pregnant Bruce, I don't have a uterus. " Clark cuts him off
"wel-"
"-or a Kryptonian equivalent to one, Bruce I got Lois pregnant you know this." Clark says, as if 1: that proved his point and 2: as is that explained how his answer proved his point.
"There are known species that are hermaphrodites" Bruce justified himself before giving a bit more context "Atlantians have five common sexes, one of which has both 'male' and 'female' reproductive organs, if fact, Arthur just went of leave because he found out he was pregnant again"
Clark did a double take "Wait, I thought when he said he was pregnant he meant like, that Mera was pregnant like in the 'we're expecting' way that couples anounce it sometimes."
Bruce shook his head, "No, I spoke with Arthur myself, he's expected to give birth in October." He inclined his head, as if tipping an invisible hat "though, I think Mera might be more proud of herself then of her husband." He said, and then, because he;s Bruce and he doesn't exactly have a normal concept of boundary's or what you should and should not share with people, he continued on after that. "I think she has a thing for having impregnated the king of Atlantis, it's a power thing I think." Bruce said, as is it were just normal to know that many details about his friend and coworkers sex life.
Clark felt the need to point out how very much he did not want to know any of that. "Bruce, that was way too much information, how do you even know that?"
Bruce just shrugged "Arthur was quite proud about it all, he told me all about it, Atlantians are a lot more, mmm, sexually free than we are."
Clark nodded along, as if it all made sense now "And you weren't about to turn down an opportunity to learn more about Atlantian mating and biology." he stated.
Clark stayed silent for a moment before turning abruptly pale. "Wait, when Arthur said he was expecting three years ago, he was still on active duty for months afterwards."
Bruce hmmed "Yes, well Atlantians are much sturdier than humans. he assured me there would be no risk to the fetus and he would only need time off when it was closer to the expected birth." he explained, before speaking again, quickly carrying on the conversation. "Anyways, we're getting off track: you are in heat"
Clark sighed "Functionally, yes." he affirmed, nodding as he did.
Bruce frowned, unsatisfied with this answer "And more specifically?" he asked, looking for an in-depth description.
Clark sighed softly"it's referred to by my people as a time of burning."
Bruce nodded along trying to 'actively listen' as Dick has asked of him, apparently it's good for maintaining relationships, and his with Clark is one he would like to be maintained. "And how long does it last?" he asked.
Clark just, sort of, shrugged. "It depends, usually only 3 or so days"
Bruce's eyebrows furrowed further at that "usually?" he inquired
Clark once again shrugged, scratching at the back of his neck, looking anywhere but Bruce's eyes. "It depends on how, ah… satisfied I am" he sounded embarrassed.
Bruce hmmed "How long is it supposed to last?" Bruce asked.
"just over 30 hours" Clark replied.
"it is long and uncomfortable because you don't have a partner" Bruce quickly summarized.
Clark stayed silent. So Bruce moved on, not wanting to push."Symptoms?" Bruce asked, one more in his seemingly never-ending line of questions, he sure hopes he's not annoying Clark in his- rather impaired state of mind,
Clark's voice cracked when he spoke. "Uhm, heightened arousal, lower refractory period, fever, higher heart rate, sweating, lack of fatigue, more of the like."
"Any confusion, brain fog or delirium?" Bruce interjected.
"Um, no." Clark said curtly, his face a little scrunched, as if he didn't exactly understand why Bruce was asking what he was asking.
But Bruce just moved on like nothing had happened, his next question already halfway off his tongue before Clark was even fully done being confused. "And what triggered it?" Bruce asked.
Clark stuttered for a moment, his eyes flicking down for a moment before shooting back up to look at Bruce. "Um, well, as you know, Krypton was a dead planet, lots of rock, minerals, not a lot of plant or animal life, mostly just Kryptonians, some rocks and some water. Well, as you know, we sort of, photosynthesize, because of that, we're deeply connected to the sun, and well, when the sun burns it's hottest, we, burn the hottest."
"You're saying that its a seasonal thing? summer time is the mating period for Kryptonians?" Bruce asked, just to clarify.
Clark nodded "Under the yellow sun? basically yes."
"And under the red one?" Bruce asked.
Clark sort of half shrugged in response. "For my people, under Rao, it wasn't exactly a yearly thing, it was more of, you sort of get there when you get there, for some it was yearly, but other it as half, or double that time, the fortress says that it has something to do with the way our cells store solar energy, the more efficiently we store it, the quicker it happens, this is also why the time of burning slows with age, as our cells age, they start loosing their ability to store energy as well"
"Basically the Kryptonian version of menopause." Bruce pointed out.
He scrunched his eyebrows, clearly thinking for a moment. "But, if it's about the amount of sun energy that one is able to store, then shouldn't yours be happening frighteningly often under the yellow sun?" And before Clark could reply he continued on. "I feel like i would have noticed you disapiering if it was any more often than yearly."
"Well, when my people were living on Krypton they weren't exactly flying around the world in a day or stopping meteors with their bare hands or fighting gods, I expend enough energy by using my powers that it really isn't an issue."
Bruce seemed to think for a moment "You said your powers developed in your early teens" he stated, Clark nodded, confirming his statement.
"But Superman didn't appear until you were 23." he continued "How often were your cycles occurring before you started being Superman?"
Clark sighed, a little bit shocked, in general at the conversation they were having. "Actually, I hadn't had a cycle yet, Kryptonians have 2 puberty's, one that happens around the same time as humans, were we go through much of the same changes that humans do, and a second one, around 25 or 30 that signals we're ready to mate, and sets our mating cycle in motion. I didn't actually have my first cycle until about a year after I became superman."
"When you were 24?" Bruce asked, though it didn't really sound much like a question.
"Actually I was still 23, it wasn't a full year after I started, probably closer to 8 or 9 months."
"You were an early bloomer" Bruce pointed out needlessly.
"Yea" Clark agreed "Probably another effect of that neat little yellow sun this planet has."
Bruce nodded a little aimlessly, not nodding or agreeing with anything in particular, at least not obviously. And then he spoke, yet again. "So, to summarize this entire conversation: you are currently in what is essentially the Kryptonian version of heat, a heat that lasts longer than it's supposed to because you normally handle it alone, this is a normal occurrence. for your people though its slightly different under the red sun."
Clark nodded "Yes, that about sums it up."
Bruce hmmed, if he were contemplating any harder he'd be rubbing his chin like a cartoon character.
"And, theoretically, what would happen if you had a partner for this period in your biological cycle?" he asked, like he was hinting at something but Clark wasn't following.
Clark squinted at him, speaking extra slowly as he answers him. "It, would, likely make it last a lot shorter, seeing as I would be more, satisfied, sexually. " even as he said it he could feel the blush growing on his cheeks. Because honestly, he had been talking about his reproductive biology with his best friend for far, far too long. And he would quite honestly like some alone time at the moment so he can go an take care of his…issue.
And then, Bruce spoke.
"Clark, I think we should have sex."
Clark blue-screened.
—-
Somehow, for some reason unknown to him in the slightest, he said yes.
Or, well. that was being a little melodramatic, he did know why he said yes: and it was because he loves his boyfriend very much, his boyfriend is very attractive, and he's been wanting to jump his bones for literal years now, only refraining, in the beginning because he was sure Bruce was straight, and more recently because he was a little insecure about what he had… down there.
But, in the heat of the moment, with the amount of hormones that are currently flooding his brain, he seemed to have forgotten why he was supposed to be worried.
And, because of that, and Bruce's- rather direct question, Clark somehow ended up laying on his back on the bed, with Bruce on top of him, straddling his legs.
And, well, Clark cant bring himself to be mad about that little fact, especially when Bruce is licking into his mouth the way he is right now.
Clark was completely lost in Bruce, the feeling of him on top of him, the pressure of Bruce's hips grinding down on him, the electric shock of pleasure that courses through him when Bruce rubs against him just right.
He was in heaven.
He wanted more.
Which, those two statements seemed like they would contradict each other, but in reality they could definitely coexist. The reason Clark knows? well, he is feeling both those feelings right now, in this very moment.
A few more minutes of light grinding later and it was just not enough for Clark anymore, he needed more, and he needed it now.
"Bruce." he gasped, Clenching his eyes tightly shut, trying to maintain control over his strength.
"Bruce I need more." He practically begged the man on top of him.
He looked up, into Bruce's eyes, and he saw- a certain spark there, one that took a minute to fully identify. But once he did, there was something that sparked even brighter inside him as well, he could see it in Bruce's eyes : he was in control, he had all the power, and he knew it, and he loved it.
And Clark found, that the longer he stared into his boyfriends eyes, the more he loved the way the look looked on Bruce, that he wanted Bruce to look at him like that forever.
"What do you want?" Bruce gasped, almost growling the question out, not slowing the movement of his hips for even a second "How do you want it?" he continued, his hips still not wavering.
Clark wasn't even sure if he was physically capable of forming words at the moment, or he hadn't been until he spoke.
"I, I need to get inside you." he pleaded, letting his head drop against Bruce, his forehead landing in the crook between his neck and his shoulder.
Bruce's hand came up to cup the back of his neck, his thumb rubbing soothingly up and down across his scalp. "Then let's get you inside me." He said easily. As if it were just the most basic, obvious course of action possible.
Suddenly they were flipped over, Clark now on top of Bruce, and Bruce pressed firmly into the bed.
"You're gonna need to open me up, Kal." Bruce pointed out after Clark spent just a few too many seconds lost in his eyes. Clark nodded, still looking intensely into the older mans eyes.
Clark spoke after a short moment, a sheepish blush on his face. "I- um, I don't have any lube."
And in response, Bruce just pulled some out from- somewhere, Clark didn't know exactly where.
Clark chuckled at him "You know, everyone calls me boy-scout but you bats are the ones that are literally always prepared."
Bruce stayed silent for a moment before answering "Are you going to fuck me or not?" he raised his eyebrow in a a silent question.
"The first one, definitely the first one" He said quickly.
Bruce huffed at him, dismissively, but in a a very Bruce-like way.
"Well get on with it then."
Clark didn't waste any more time on useless and stupid things like words, instead he got right down to business, popping open the plastic cap of the little travel-sized lube bottle Bruce had provided with his thumb and quickly spreading a dime sides amount on the tips of his middle and ring fingers and bringing them immediately to Bruce's entrance.
Bruce jumped minutely when Clark's fingers touched his skin, as Clark -in his haste- had forgotten to warm the lube. Bruce didn't say anything about it, just pushed back slightly against the fingers, so Clark didn't say anything either.
Bruce was quick to open for him, almost no resistance even after the second finger went in, it made Clark wonder how often he did this to himself, how many times he'd done this with other men in the past.
He shook his head, trying to stay focused singularly on the beautiful man in front of him, allowing him to touch him, who's just about to allow him to fuck him.
Clark double checks that he's had enough prep at least twice, and then he's lining himself up to the entrance, grabbing firm hold of Bruce's hip and gently pushing his hips forwards.
The first sensation of his cock breaching Bruce is, otherworldly, transcendent, immaculate and all of the other big, beautiful words that Clark can't think of at the moment because he's too busy getting his brain rung out of his dick.
Bruce feels like he's being split in half, in the best way possibly imaginable.
Clark was big, He knew it the second he'd gotten his eyes on him, he'd known it would be amazing, and probably slightly painful the morning after.
Bruce was a bit of a size queen, but there was something, specifically amazing about Clark's dick.
He didn't know if it was because it was shaped a little differently, or if he was secreting some sort of aphrodisiac or pheromone but the feeling of Clark sliding to a stop inside him, it was unlike anything he'd experienced before.
He couldn't help but clench few times around Clark's girth. each time he did so spreading shocks of pleasure up his spine and across his hips.
He could hear Clark's little groans and moans as Bruce's insides squirmed around him.
Clark dropped his head down to the side of Bruce's, panting.
Clark felt so, warm and heavy inside him, it was amazing, and honestly Bruce was getting a little impatient for Clark to start moving.
Bruce started rocking back and forth, just tilting his hips slightly up and down, attempting to create some friction.
And while it was working, it wasn't nearly enough.
"Clark." Bruce called out, his voice surprisingly steady.
Clark hmmed in acknowledgment, not moving from his position on top of Bruce.
"Clark I need you to fuck me." He said- demanded. His voice commanding in a way that was doing things to Clark.
Clark literally moaned at the suggestion, as if it were just too much to bare.
He shook his head, slowly but with purpose. "Nn~ no- I don't wanna hurt you." he said, with as much finality a voice can carry when its breaking off into a string of grunts and moans in between every word.
Bruce bit back the urge to scoff at him, because he recognized that Clark's hormones were likely going crazy right now, and that he probably had some protective and nurturing instincts coming out right now that made him want to be extra gentle and caring to his partner, and Bruce wanted to sympathize and be gracious to that, because he recognized that caring for Bruce is something that Clark probably needs right now.
But- however, what. Bruce needs is to be violently fucked.
Which didn't seem like it was gonna happen if things kept going the way they were going.
So Bruce took matters into his own hands. He hooked his foot under the back of Clark's knee, and the other one over the top of his other leg, and quickly, using momentum and the fact that Clark was currently distracted to flip them both over.
The movement jostling Clark's dick inside Bruce, making them both moan as it rubbed against Bruce's insides.
Bruce shifted a little, moving his legs further apart so he was properly straddling Clark, pinning the larger man down with his weight.
Now, obviously, even while being distracted Clark could easily buck him off, there simply was no restraining a kryptonian on earth with no red sunlamp and no kryptonite, but Clark wouldn't that, because he's a good boy.
Bruce inhaled heavily, this position highlighting even further how unbelievably large Clark was, gravity making it so he'd slid down to envelope the man completely, he could feel the burn of his rim, he could feel Clark's hair against him, it was amazing, and it made him wonder if this was average for kryptonians, or if Clark was extraordinary by kryptonian standards as well.
Clark started to whine, reaching up to grab Bruce's waist, slightly tugging at him, like he wanted to put them back into the position they were in before.
Bruce shushed him, bringing a finger to his lips, effectively silencing his whining.
"Stay still for me." He commanded softly, his voice just above a whisper, while looking directly into Clark's blindingly blue eyes.
And just like that Clark fell still, his arms dropping to loosely rest on Bruce's hips, his attempts to reposition them ceased.
Bruce was about to move, but he noticed Clark's eyes start to well with tears, his eyes growing impossibly more beautiful as they filled with liquid, going glassy and somehow almost glowing.
Bruce paused immediately.
"Clark?" He asked, catching the man's attention. Clark's eyes locked onto his his attention souly on Bruce, like he was the only thing in the universe that mattered.
"Whats wrong?" He asked the man, speaking softly so Clark wouldn't think he was angry with him.
Clark sniffed, "I don't want to hurt you." he admitted, and honestly, Bruce could have guessed that much.
Bruce smiled at him "You're not gonna hurt me, it feels good Clark."
Something small, a spark forming behind his dodger blue eyes, but the still seemed hesitant, unsure.
"Come on, make me feel good." He almost begged, he needed to show Clark how much he wanted him.
He could tell Clark was about to give in.
"I want to feel good, I need you to make me feel good." Bruce could almost hear his resolve cracking.
"Clark, I need you." the final straw.
Clark nodded. "Okay." He agreed.
Bruce nodded, taking in a big breath before he began to move. He leaned forward, bracing his hands on Clark's ample chest, before he started to move. Bringing his hips down and forwards and then up and back.
He started out slow, not wanting to go too hard on Clark too fast. He slowly quickened the pace, inching himself further up and down Clark's cock, nearly bouncing at this point.
He could he Clark moaning, still trying to keep his his still, but failing every once in a while, the reflexive reaction to Bruce's stimulation causing him to buck up every couple strokes, punching the air out of Bruce's chest with his sudden thrusts.
It was perfect, but Bruce wanted Clark to enjoy himself too, wanted him to get what he needs out of this interaction, to he egged him on "C'mon, you can move, I told you: I want you to fuck me."
But Clark shook his head again "No, I'don wanna hurt you." his voice was somewhat slurred, he was clearly high on hormones but still trying to restrain himself.
It was as adorable as it was infuriating.
Clearly he needed to push Clark a little further, get him to lose control in the way he seems to so desperately need.
And then the idea hits him: this, this state Clark is in, his 'time of burning' its a mating cycle, meaning it's primary purpose is to drive kryptonian couples to conceive. Which means Clark is likely experiencing some hormone induced baby fever right now.
The thought gets him thinking, planning.
And if he likes the idea of it too? that's nobody's business but his.
He feels a little stupid, feels some preemptive embarrassment, but if it helps Clark, then he'll do it.
"Love." He says, his voice rough with pleasure.
Clark's eyes snap to him, looking at him like he's the sun, like he's the single perfect thing that sustains him.
"How are you gonna put a baby in me if you don't fuck me?" He asks, trying to be serious, trying to sound sexy. But he feels like he didn't really succeed.
Clark seems to disagree though, his already blown pupils grow wider, enveloping his irises.
"A baby?" He asks, sounding amazed.
Bruce smiles at him, pressing his forehead against Clark's, hmming softly in agreement.
And suddenly, it was like a switch had flipped, Clark quickly pulled out, and used his strength to flip Bruce onto his back -and Bruce wasn't even mad that he was disobeying his earlier order- and hiking Bruce legs up over his shoulders, he felt Clark lift his hips, to perfectly line them up, before pushing himself back inside of him, in one smooth, but firm motion.
He quickly picked up the pace, trusting into Bruce, chasing the heat of his body every time he pulled back.
Bruce was sure there was some sort of aphrodisiac quality to Clark's pheromones, normally sex doesn't feel even nearly as good as it does right now.
He feels like he's on fire in the best way imaginable, like every thrust, every movement inside him shocks all of his nerves, like lightning shooting up his spine every time Clark pushed all the way in, the burn of his rim.
It was amazing.
He could tell that Clark was losing himself in the sensation, he was babbling quietly, almost nonsensically "im'gon put a baby in you." He babbled. "Gonna get you pregnant."
He placed a hand on Bruce's stomach, looking at it like it as the most attractive thing about him. He shrugged Bruce's legs off of his shoulders, letting them fall to either side of his waist, Bruce's ass dropped against the bed.
Clark scooted closer, forcing Bruce's legs apart and slightly up.
And then Bruce noticed, as Clark shifted closer, that he felt larger, wider than he had before.
That there was some resistance now, as he fucked him, that shouldn't be there considering they've been having sex for a while now.
It took Bruce a moment to process it, the feeling of Clark stretching him again, of him filling him even further was enough to momentarily stall his brain.
It wasn't until he noticed, a few thrusts later that there felt like there was something hard, a bulge at the base of Clark's dick, that he realized it was a knot.
The intense arousal he felt at the realization was unexpected, but not unwelcome.
Considering it was the parts that his boyfriend has, it would be inconvenient if Bruce didn't find them attractive.
Bruce's train of thought was cut off by Clark shifting again, somehow pressing deeper, but there was even more resistance now, enough that, though Clark was pushing, Bruce's hole just wasn't letting him inside.
Clark seemed to realize this, and shifted once more, grabbing Bruce's leg's and shifting them even further apart before bracing his arms on either side of Bruce's shoulders.
That was when Bruce realized that it was time.
He would need to explore his enthusiasm at the prospect of being knotted some time in the future, right now he had more important things to worry about.
Like the pressure against his rim, the beautiful, amazing push of Clark's cock, his knot, trying to push it's way inside him.
His whole body jerks when Clark finally pushes it inside, the force of it pushing him forward.
Bruce clenches around the intrusion, so, tantalizingly close to orgasm, so much and still somehow just barley not enough.
He feels Clark cum inside him, hot and burning and wet as Clark paints his insides, he twitches and clenches even further, not Bruce moans, rocking back against him as his cock pulses again and again and again, pumping more into him, his knot keeping all the fluid locked inside.
Bruce lowers a hand down to touch his lower stomach, it's just slightly swollen, full of Clark's spend, And Bruce is in love, with everything happening at the moment.
After a few more quick gushes of fluid, Clark seemed to still, Bruce moaned, rocking against him as much as the knot would allow him to, and tried to finish himself with the help of his hand.
Reaching down slowly he grabbed hold of himself while he spoke.
"D'you think it took?" He asked, it was a joke, mostly, as well as it was a ploy to see if Clark would go another round, but Clark just shook his head slowly, his eyes still squeezed shut in concentration.
"Mm, no, I haven't put my eggs in you yet." His voice was still slurred and loose from everything that had been happening.
Bruce did a double take, and then when it still didn't make any darn sense he took a moment to further process.
"Eggs?" He asked, unsure if the pitch of his voice raised from arousal or fear or… maybe a bit of both.
Clark nodded, his eyes squeezed tightly shut. "Uhhhhaaaaah~" He moaned lowly, rocking his hips slightly, more like shifting back and fourth, as much as he could while they were still tied together.
Bruce groaned at the movement. And then he felt something more, somthing pushing against his enterence.
He could only assume it was the aforementioned egg.
He moaned as it bullied up against him, forcing its way inside him with a force only accomplishable through Clark's ungodly Kryptonian muscles.
Aparently even the muscles in his dick were super.
He groaned, throwing his head back as it started rolling breach him, the slightly pointed round head of it stretching his rim further around the knot and now the circumference of the egg added to that.
There was another gush of fluid inside him, it pushed the egg forward, forcing the rest of the way inside him in a rush of liquid.
Bruce came right then and there, a mind wracking thing: his legs shook and quivered, the force of the orgasm nearly knocking him out, but Clark just kept pumping back and forth in this agonizing symphony of pleasure and near overstimulation.
Bruce wasn't entirely sure he didn't black out.
They were both panting when Clark leaned down to kiss Bruce, licking gently into his mouth.
Eventually, after one last gush of fluid, Clark stopped, pulling back from Bruce's mouth compleatly.
Bruce looked deeply into Clark's intoxicatingly blue eyes, still gasping for breath and general sanity after getting his brain fucked out of him. "You couldn't have warned me about the egg?" He asked rhetorically.
Clark blushed a little "Sorry." He said, seeming like he just generally forgot to mention it.
"I'll tell you when the next one's coming."
…
"The next one?" Bruce asked, trying not to sound at all panicked.
Clark just smiled at him, all dreamy like.
"The next one." He confirmed, something like wonder in his voice.