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Kai doesn't mind fifth-wheeling. He's extremely used to it at this point. It's probably unlucky that all four of his friends ended up in relationships without him, but it seems that's just the way life works for Kai. When it comes to simply third-wheeling, Taehyun and Yeonjun are the preferable couple. Taehyun isn't one for PDA, and while Yeonjun is incredibly touchy, he's like that with everyone. Their constant flirting, Yeonjun's more obvious and Taehyun's more subtle, can be tolerated because of how truly happy Kai is for his friends to have found each other.
Soobin and Beomgyu are another case entirely. They don't do excessive PDA, and their flirting mostly presents in pointless bickering, which Kai often joins in on. No, it's none of that that makes them the less ideal option. It's the fact that Kai is head-over-heels in love with both men. He practically grew up with Soobin, both of them have been attached at the hip for as long as he can remember. He loved him before he even had the words to describe the feeling. And when Beomgyu came into the picture, how could he begrudge Soobin for falling in love with the omega when Kai did the exact same thing? Because who wouldn't love Beomgyu. He's beautiful, funny, caring, everything a partner could ever want. He and Soobin clearly agree on this.
It's been around a year since they got over themselves and finally started officially dating, and that period has been…well, weird. When it first set in that all of his friends were now off in pairs, Kai thinks it's normal that he panicked a little bit. Even thinking in the short term his abandonment issues flared, unable to hide from the fact he was ultimately the lowest priority friend of their five now. But when he thought long term, that's when he would really begin spiralling. Thoughts of two weddings, of everyone moving away, starting families and forgetting all about him. Kai has never been close with his “real” family. These four men are his chosen family, and the thought of losing them, of being left alone again, it was unthinkable.
But the weird thing is, none of what he feared really happened. Taehyun and Yeonjun remained as non-traditional as they've always been, and Soobin and Beomgyu didn’t stop making time for him. If anything, the latter couple invited him to hang out more often. Kai assumed their nights staying up late gaming together were over, but instead they practically doubled. When he wasn't on a call with at least one of them, he was out eating with them, or at their apartment watching a movie. It was probably bizarre to an outsider—Kai certainly thought it was—but more than anything it was a relief. He wasn't about to look a gift horse in the mouth. If the people he adored most in this world want to spend time with him, who was he to say no? Being completely real, he's pretty sure the answer is overcompensation. That the others are worried about him feeling left out, so they put in extra effort to keep him happy. Well, if that's their plan, Kai thinks he's lucky to have such caring friends.
He's tried dating occasionally over the years, alphas and omegas as well as fellow betas, but nothing really stuck past the third or fourth date. While it's most common for betas to date other betas—mainly due to their lack of smell for pheromones—they can give and receive a mating bite from any subgender. A beta's own scent is less prominent than an alpha’s or an omega’s, and gives less information about their current mood. Many of Kai's budding relationships with non-betas ended over lack of understanding. Kai is very slow to open up (if ever, frankly) and his scent doesn't give anything away either. He wasn't ever particularly heartbroken over these break-ups, because none of them were Beomgyu or Soobin.
Tonight, both of those men have placed themselves on either side of Kai while getting into a formation for a game of Spin The Bottle. All five of them settle on the carpet of the living room in Soobin and Beomgyu's apartment, their usual hangout spot due to it being the biggest. They're celebrating Soobin's exam results, but it's mostly just an excuse to hang out and drink. Despite it being pretty late, none of them are really drunk. Being a group of relative lightweights, most of them have paced themselves and only sipped at the soju bottles scattered across the floor. The most affected is clearly Yeonjun, the only one who appears to be more than tipsy. This is obvious from his half-lidded smirk and the fact one of his hands is glued to his alpha's lower back at all times.
Kai expects there to be a game of rock-paper-scissors to decide who goes first, but Beomgyu takes Yeonjun's drink, downs the rest of it and slams the bottle down in the middle of their circle.
“Everyone ready?” The omega is clearly in an instigating mood, casting a smug grin around the room. They all chime various agreements. Kai hopes against hope that he won't have to participate at all.
Beomgyu licks his lips, making a show of dramatically spinning the soju bottle as hard as he can. He watches it so eagerly that Kai has to suppress a laugh. It eventually slows and lands squarely on Taehyun. Beomgyu makes a face, not hiding his disappointment. Kai wonders who he was hoping for, maybe just Soobin? Taehyun laughs goodnaturedly at Beomgyu's sour expression, turning and pursing his lips with his eyes closed. The omega relents, pecking his lips briefly, but that doesn't satisfy the group. The other three boo in unison until he goes back for another slightly longer kiss, eliciting cheers and claps.
Taehyun doesn't miss a beat, seizing the bottle and spinning it immediately. It stops in front of Soobin, who has to lean across a delighted looking Yeonjun to kiss the other alpha. The kiss isn't combative at all, like someone might assume for two alphas. Instead it looks quite sweet to Kai. It's Taehyun who breaks it, gently pushing Soobin back as his ears glow red. He maintains his nonchalant appearance as his boyfriend whoops loudly.
Soobin blinks, seemingly needing to find his bearings before sending the bottle spinning again. It slows to a halt in between Yeonjun and Taehyun, which is immediately remedied by Beomgyu grabbing the bottle and pointing it at Yeonjun.
“For fairness,” he reasons, but the smirk on his face makes that seem unlikely.
Yeonjun grins, wiggling his eyebrows as he pulls Soobin in by his collar. It's the first open-mouthed kiss of the night. Yeonjun dives in tongue-first and Soobin is left trying to keep up. A charged few seconds pass while the onlookers are all dead silent, everyone embarrassingly enraptured by the display.
Soobin pulls back with a fond shove to Yeonjun's shoulder. “Jesus Christ, hyung,” he laughs, wiping his now wet mouth with the back of his hand. Yeonjun's cocky smile returns, shooting Soobin a wink as he goes right for the bottle.
Kai watches with horror as it spins, almost in slow motion, and dramatically stops pointing directly at him. His foolish hope that he would somehow be left out of this madness is shattered, and he's still reeling from that fact when he realizes Yeonjun has already crawled past Soobin, and one of his hands is firmly cupping Kai's jaw. The beta opens his mouth to say something, and is met with Yeonjun's tongue against his own. Taehyun lets out an enthusiastic cheer, which does not help to ease the fire burning within Kai's cheeks. He is quickly struck by what a skilled kisser the omega is, despite the alcohol in his system. Even through the sensory overload of Yeonjun's lips moving against his, Kai distantly registers a faint, low growl to his left.
Yeonjun breaks the kiss after what simultaneously feels like five seconds and an eternity, giving him one last peck before retreating entirely. He settles back in his spot with an arm around Taehyun. Kai remains dazed, mind still stuck on the growl he heard. It would make the most sense if it came from Taehyun, an alpha being protective of his mate and whatnot, but Taehyun is sitting to Kai's right. Not to mention, that alpha was literally cheering seconds prior. Could his mood really change that quickly? He looks perfectly happy right now. The only alpha to his left is Soobin. Is it possible he felt possessive over Yeonjun? Kai tries to work it out, but the pieces don't fit together.
Taehyun's voice snaps him back to the present moment. “Hey, everyone got a kiss. That's the perfect place to stop, right? We could order food—”
“No!” Beomgyu interrupts. “Kai didn't get to spin the bottle yet!” He sits forward indignantly, placing a hand on Kai's shoulder as if he's enacting his wishes and not the exact opposite.
Before Kai can find his voice, Taehyun agrees with the others all nodding along. Shit. Everyone watches expectantly as Kai surveys the situation. He takes in the four men in front of him. Two of them he is embarrassingly in love with, and therefore does not want to kiss in front of a live audience. So, a 50/50 chance of humiliation. A toss of the coin.
Kai swallows hard and grasps the bottle, spinning it as hard as he can. It whirls around long enough to create a bit of suspense, before stopping squarely in front of Beomgyu. The omega openly beams, even doing a tiny clap to himself as he shuffles on his knees to a frozen Kai. Beomgyu cups his cheek with a featherlight touch, eyes bright and oddly hopeful in a way that has Kai feeling light-headed and a little confused.
“Okay?” Beomgyu checking in on him is a welcome surprise, but Kai stupidly finds himself hesitating. He glances at Soobin for permission, which is a weird thing to do because nobody else in the game asked anyone's partners. Obviously because they all agreed to play spin the bottle, dumbass, but it’s too late. Soobin does nothing, but the corners of his mouth curl upwards. His eyes are dark, in an intense way that accelerates Kai's heartbeat. It spurs him on to finally meet Beomgyu's eyes again, giving the tiniest nod.
The omega closes the gap eagerly, kissing him with clear intention. It's a stark contrast to his lazy kiss with Yeonjun, who took his leisurely time. Beomgyu's pace is quicker, as if he's concerned about a time limit Kai is unaware of. The beta works to keep up, opening his mouth pliantly when Beomgyu's tongue teases his lips. He clutches the hem of his shirt to stop himself from reaching for the omega's waist. He lets Beomgyu set the pace, unsure of where the line is and feeling consistently worried about crossing it. Beomgyu clearly has no such concerns, because he places a hand on Kai's thigh, stroking it dangerously high. His other hand remains in the beta's hair, which he occasionally uses as leverage to tilt Kai's head however he wants.
Kai has dreamed about this for years at this point, but the fact he's experiencing it right now refuses to sink in. He tries to live in the moment, and really indulge in getting this closeness with Beomgyu, but he can't quite shake his awareness of the audience. Kai is no expert on the passage of time right now, but he's pretty damn sure that they've been fully making out in front of their friends for longer than most would deem appropriate. It dawns on him that said audience has been suspiciously quiet. The usual cheering and heckling stopped after the initial kiss, and when he strains to listen he can hear the three voices murmuring, having a conversation between them.
Kai's about to break the kiss—one hand already splayed on Beomgyu's chest in preparation to push him—when the other man moves closer. He throws a leg over Kai's, sitting firmly in his lap. Thankfully they're interrupted by a single resounding clap, which rings through the air with a sense of finality. Beomgyu sits back off him. Free from the lips on his, Kai can see that it was Taehyun who stopped them in their tracks.
“Well, we're out of here,” the alpha says simply, moving to stand up.
Beomgyu's face falls. “What? Why?”
“Beomgyu,” Yeonjun starts, “your pre-heat has started. We can smell it pretty strongly.”
The omega looks to Soobin for confirmation, who nods. Beomgyu slumps back against the floor, disappointed.
“Ugh. Sorry guys…I'm not even due for another week.”
Yeonjun pats his hair comfortingly. “Don't worry about it. We'll get a meal together when your heat is over.”
Kai sees that Taehyun has been silently darting around the room gathering their things. He eventually seems satisfied, helping his unsteady mate to get up. It's not long before they're already halfway out the door.
“Goodnight!” Taehyun calls.
“Have fun!” Yeonjun giggles.
The silence that engulfs the room the moment they're alone is deafening, at least to Kai. He's suddenly hyperaware of how close the other men are. Beomgyu is still basically pressed against his side, one hand back on Kai's thigh (when did that get there?) and Soobin is mere centimeters away. Nobody moves.
Kai clears his throat awkwardly. “I should go too.” He expects to see relief on their faces, but instead they both frown.
“Why?” They question in unison, not helping the intimidating vibes.
“I mean, don't you want to be alone? His heat is coming.” Kai directs the last part at Soobin, one final plea for him to act like a normal possessive alpha. For him to show Kai where he stands by insisting the beta leaves so he can protect his omega.
None of that happens. Instead, Soobin smirks. “Don't you want to stay?”
Kai's throat closes, panic rising by the second. It's times like these that he resents being a beta. He thinks the ability to detect emotions in pheromones would come in handy right about now. Are they teasing him? Did they figure out his feelings for them? Kai searches for answers in Beomgyu's eyes, but only finds them glued to his face, dark and predatory.
The silence stretches until Kai can't take it anymore. “What?” he squeaks helplessly.
“Because we want you to stay,” Beomgyu chimes in. He slides his hand on the beta's thigh up until it's dangerously close to his dick, and Kai embarrassingly has to suppress a noise at the touch.
Kai's head bounces back and forth between the two faces before him, desperately looking for clues but finding none. All he can read in their faces is want. Even Soobin doesn't look smug anymore, eyes often catching on Kai's lips. The alcohol in his system takes this to another level of out-of-body experience. It's a conscious effort to stay grounded. He works hard to find his voice.
“Are—are you sure?” Kai's breathing is already coming heavier at the mere thought of what it seems like they're proposing.
Beomgyu touches his face gently, batting his long eyelashes. “Please, alpha. I want you to fuck me.”
Kai gets hard so fast his head spins. New kink discovered, apparently.
He swears under his breath then turns to Soobin, seeking permission for the second time tonight. This time it’s definitely called for, Kai thinks. It would feel uncouth to accept such an offer without checking in with the omega's mated alpha. His actual alpha, Kai reminds himself. He finds Soobin's face is much closer than it was last time he looked.
“He needs you. Are you going to refuse such a polite request?” The alpha's voice is smooth as silk. A smile plays on his heart-shaped lips.
Kai opens and closes his mouth dumbly. “You're okay with this?” he manages to croak, genuinely curious.
“Yes. You want to know why?” Soobin leans down, until his lips are brushing Kai's ear. “Because I need you too.”
A shiver runs through the beta's entire body. “Fuck.”
Beomgyu moves his hand, dragging his fingertips against Kai's clothed dick just teasingly enough to get his attention.
“So?” The omega's questioning gaze traps him, demands an answer.
If this somehow isn't real, if it's perhaps some fucked up test to see if Kai would ruin their friendship or not, Kai has certainly failed. He's past the point of no return. He finally nods, giving into what his instincts have screamed at him since the beginning. Beomgyu lights up, the pretty picture of pure glee. He removes the hand on Kai's crotch to shove Soobin's shoulder playfully.
“I told you he would!”
Soobin only scoffs, eyes never leaving Kai's lips for a single moment.
“Can I kiss you?” he blurts out, seeming visibly antsy from the wait.
Kai exhales a tiny disbelieving laugh, then nods again. The alpha's lips are on his before he can blink, an unmistakable sense of urgency in his actions. Kai loses himself in the feeling, not really noticing their change in position until his back hits the floor, Soobin's crotch pressed firmly against his own. Kai's gasp breaks the kiss and Soobin lets it, travelling along his jaw and down his neck. When his lips brush close to a scent gland, Kai's breath hitches.
Soobin leans back to look at his face. “Can we scent you?”
“Yes,” Kai breathes, because ‘it's all I've ever wanted’ isn't really part of his limited vocabulary right now.
Beomgyu shuffles up to the other side of the beta, mirroring Soobin at the base of his neck, nosing softly around the area.
While betas can't smell pheromones, they get the same comforting and pleasurable feeling from scenting. Plus, since they have their own faint scent their mate can still like for their pheromones to mix.
Kai has only been scented a handful of times as an adult, mostly impersonal occasions with whoever he was trying to date at the time, and the odd time Taehyun or Yeonjun scented him during one of his bad days. Scenting isn't strictly for romantic relationships, but it's so intensely intimate that it's still uncommon to experience it outside of them. In short, at night when Kai lets himself yearn, he probably fantasizes about Beomgyu and Soobin scenting him even more often than he imagines anything sexual.
“Hyung,” Kai whispers, unsure even himself who he's referring to.
The first time one of them brushes his scent gland, Kai feels a thrill run down his spine, but the moment when both of them begin properly kissing and licking at the sensitive patches of skin, the euphoria that rips through the beta is so strong that for a solid few seconds he is fully convinced he came in his pants.
Kai shivers as he regains his senses, using the first ounce of control he regains to push both men away, one with each hand. Once the offenders are a safe arms-length away, Kai buries his face in his hands, breathless.
“Kai, baby, are you okay? Was that too much?” The alpha's voice sounds far away to his floaty mind, and it takes real effort to process the words. He feels Soobin shuffle back just enough to remove the pressure on his dick, which helps clear his head somewhat.
“Just— give me a second,” Kai gets out. “I don't want to come yet.”
The shift in mood is palpable. “That good, huh?” The smug smile audible in Beomgyu's voice is equal parts hot and infuriating.
Kai uncovers his face to glare at him. “Shut up.”
Soobin stands, offering a hand to each of the other men. “Bedroom?”
Beomgyu takes it immediately, leaping up enthusiastically. “Yes. I thought you'd never ask.”
Kai finds himself being led to the bedroom by the two hottest men he has ever met. Anticipation flickers in his chest and seizes his heart, but there's no time to dwell. He notices they're heading for Soobin's room, evident from the significant lack of decorations and plain bedsheets.
As soon as they pass through the door, Beomgyu throws his shirt and sweatpants off as if they personally offended him. He then grabs Kai and unceremoniously drags him until they're both on the bed, the omega on his back beneath him. The kiss Kai is pulled into is immediately filthy, all tongue and some teeth. Beomgyu's hands roam greedily, only stopping to squeeze at his pecs, swallowing the small moans his actions elicit. Eventually he grows impatient with Kai's inaction, and resorts to taking the beta's hand and leading it to his clothed pussy.
“Feel how wet I am for you.” He keens at the touch.
Kai can, even through the fabric of the underwear. He presses his fingers down, adding some much-needed pressure, and Beomgyu throws his head back with a groan.
“Clothes off, now.”
Kai stands off the bed to strip, but before he can actually start Soobin plasters himself to the beta's back. Kai can feel how hard he is, the alpha's clothed dick pressed against his ass. Soobin shoves his face into Kai's neck and inhales deeply, hands creeping up his stomach under his shirt.
“You smell so good covered in our scents. Now everyone will know you're ours.”
There are few things he could've said that would've turned Kai on more than that just did.
Soobin pushes the shirt up and over his head, discarding it hastily. He drops sweet kisses on the beta's now bare shoulder as he pushes Kai's sweatpants and underwear down in one go. Kai kicks them off as best he can, still restrained by the alpha's surprisingly firm hold. One of Soobin's hands finds Kai's pec, thumb skimming his nipple, while the other meets his dick. Kai lets out a whimper as the alpha jerks him painfully slowly, grinding onto his ass in tandem with the strokes. His eyes flit to Beomgyu, who he watches tease his pussy over his shorts. He prods at his clothed entrance, moaning helplessly. A clear complaint.
The omega's noises bring Soobin to his senses, and he releases Kai with a light slap to his ass. The beta takes one deep breath, then climbs back onto the bed. Beomgyu yanks his own underwear off and eagerly wraps his legs around Kai's waist.
“Need you inside me. Please.” The omega's heels dig into his back, pulling him closer.
Kai starts to line up with his entrance, but becomes distracted by how much slick Beomgyu is producing. He's so wet, Kai cant resist rubbing the head of his dick up and down the soaked folds. Beomgyu whines loudly, hips lifting off the bed.
Kai freezes, suddenly having an idea. “Wait! Uh— condom?”
“No,” Beomgyu practically sobs, eyes tearful as he pleads with the beta. “Oh my God, just fuck me. Need you, alpha, please.”
Kai relents, finally sinking into the warm mass of Beomgyu's pussy. The omega doesn't stop babbling as he bottoms out, moaning in between every “yes” and “feels so good”. Kai groans, the tightness nothing short of overwhelming.
“Move,” Beomgyu pants, pushing his hips into Kai's, trying to fuck himself on his dick.
Kai begins thrusting, starting off slow, but quickening when the omega asks him to. He sets a fast pace, hissing when he feels Beomgyu's nails dig into his shoulders. The omegas noises are relentless, and so hot that Kai is already gritting his teeth against an impending orgasm. He changes angle slightly, and Beomgyu gasps, legs kicking Kai's lower back.
“There, fuck, right there. Don't stop,” Beomgyu's nails drag down the beta's back with every thrust, likely drawing blood.
Kai props himself up, fucking into man under him harder. “‘M close,” he admits, dropping his head into the omega's neck.
“Come inside me,” Beomgyu begs. “Fill me up, alpha.”
Kai bites down on Beomgyu's shoulder as he comes, close to his mating bite from Soobin. The omega whimpers, thrashing against him as he comes too. His walls spasm around Kai's sensitive dick, milking him for more than the beta even knew he had. The pleasure is so much it's almost painful. When Kai finally comes back down to earth, he drops a kiss on Beomgyu's forehead, then cringes slightly, unsure if that was too romantic for this casual threesome situation. He carefully pulls out, eliciting a small whine, and rolls off the other man, lying on his back next to him.
Soobin approaches the bed, fully naked now. He reaches for Beomgyu, brushing the sweaty hair from his forehead.
“Did Kai make you feel good, puppy?”
Beomgyu nods eagerly, eyes barely open. Kai blushes, embarrassed despite everything that just happened. Soobin makes a pleased sound, then moves to Kai's side of the bed. He strokes the matted hair from his forehead too, and Kai leans into the touch.
“Was Beomgyu good for you?” Soobin asks him this time.
The beta takes a second to process what was said, words stuck in his throat as he watches the alpha. His intimidating beauty erases all thoughts from Kai's mind, not helped by the way he has to avoid eye contact with his dick.
Kai clears his throat. “The best.”
Soobin laughs softly. “Do you think he's earned a small break?”
Kai nods, unsure where this is going.
“Will you suck me off, while he rests?” Soobin says it so casually, as if he's asking Kai his favorite Pokemon.
The beta gulps, then nods again.
Soobin shakes his head slightly. “Use your words, baby.”
“Yes, I want to.” Kai feels hot all over.
Soobin takes his hand, helps him up off the bed and leads him to the other side of the room. Kai wonders why, until he sees that he's been placed in Beomgyu's eyeline. The omega smirks lazily as he watches Soobin gently push Kai to his knees.
“I'm going to fuck your mouth. Push me off if you need to stop, okay pup?”
“Okay,” Kai affirms, trying not to explode from the pet name. His mouth waters as he takes in Soobin's dick for the first time. It's huge, no surprise there, and he suddenly wants it inside him any way possible. Kai opens his mouth wide, finding Soobin's eyes to wordlessly urge him on.
The alpha swears, threading his fingers through Kai's hair to hold him still as he guides his cock past the beta's lips. It's a tight fit. Kai hasn't given many blowjobs in his life, and none of them were for a dick of this size. When the tip knocks the back of his throat, tears sting his eyes.
Soobin groans, gripping Kai's hair tighter. “Fuck. You feel so good for me, my pretty omega.”
Kai moans helplessly around Soobin's dick, his own twitching with arousal. That's two for two on new kinks today, he logs mentally.
The alpha starts moving in and out, thrusting gently enough to not hit the back every time.
“God, look at you, taking me like this. Bet you'd take my knot so well, wouldn't you?” Soobin moves faster, encouraged by Kai's noises. “Do you want that? Want me to knot you?”
Kai practically sobs, mouth too full to do anything but try to nod, which proves quite difficult with Soobin's relentless hold on his hair. The alpha seems to get the message though, groaning as he pulls out abruptly. He goes down to one knee, pecking Kai on the lips as he uses a thumb to wipe away a tear the beta didn’t even notice fell.
“You did so well, okay baby? Such a good boy for me. My other omega needs me now, you go rest.” Soobin's gentle words calm Kai as the alpha helps him up and guides him back to the bed.
Kai settles next to Beomgyu, ears burning from the knowledge he's already half-hard again and the others have definitely noticed. He avoids the omega's smug gaze, watching as Soobin settles between Beomgyu's legs.
The alpha dives in tongue-first, but comes back up pretty quickly. He moves until his head is hovering above Beomgyu's, who opens his mouth and sticks his tongue out. Kai finally understands when Soobin's lips part, dripping his come down into Beomgyu's waiting mouth. Kai hears himself whimper involuntarily, and Soobin's eyes snap over to him.
“Do you want some?”
Kai should be disgusted by such an offer, but he finds himself nodding, already sitting forward.
Soobin returns to the omega's pussy, who moans when he has to delve in deeper this time. Once satisfied with the amount collected, Soobin turns to Kai. The beta copies what he saw Beomgyu do, opening his mouth ready for the alpha to spit inside. Soobin looms above him for a moment, but instead of spitting he grabs Kai's jaw and leans down to press their tongues together, mixing the come with his spit. Kai gives a surprised moan as Soobin starts fucking his tongue into the beta's mouth slowly. It's filthy. Kai's head spins, feeling himself grow to full hardness without even being touched. Soobin finally releases him, pulling back with a long string of spit still connecting their lips.
“Holy shit,” Beomgyu breathes, touching himself as he watches.
Soobin turns back to the omega, ordering him onto his hands and knees. Beomgyu obeys eagerly, angling himself towards Kai as he does so.
The alpha wastes no time, lining up and pushing into Beomgyu without another word. He sets a brutal pace, immediately going hard and fast, clearly knowing from experience how his omega likes it. The sound of their hips slapping together and Beomgyu's high pitched moans fill the room, and Kai simply watches in awe. He's about to fist his own cock when Beomgyu reaches for him, making grabby hands until Kai crawls into his space. The omega kisses him messily, moaning into his mouth. Kai is basically holding Beomgyu as he gets fucked, he can feel every thrust jolt the omega against him.
“Scent me, scent me,” Beomgyu begs, repeating it like a mantra until the beta noses his neck. Kai finds his scent gland and goes at it, licking and sucking hard right away.
Beomgyu sobs, nails digging new crescents into Kai's already marked shoulders as he comes. He collapses onto Kai's chest, small whimpers escaping as Soobin continues to fuck into him relentlessly, chasing his own orgasm. He comes soon after, filling Beomgyu up for the second time today. Kai's stomach lurches when he thinks about his and Soobin's come mingling together inside of Beomgyu.
He's taken aback by the unexpected feeling of said omega kitten licking the head of his cock, unable to control his choked moans. Soobin appears next to them, pulling at Beomgyu's hair to get him off.
“Let me,” he purrs, taking Kai's dick in his own hand and jerking him off quickly. The omega busies himself elsewhere, attaching his mouth to one of Kai's nipples and using his fingers on the other. Both sensations combined send Kai over the edge in no time, the feeling so intense that he loses vision for a few seconds. When his senses return, he sees Soobin licking the come off his hand.
“You're trying to kill me,” Kai says, voice shaky.
Soobin laughs weakly and flops down on the other side of him, so the beta is sandwiched between them. All three of them pant into the silence, sticky and spent.
-
Kai doesn't remember falling asleep until he wakes. With a glance to the window, he figures it can't have been more than a couple of hours due to it still being dark outside. Beomgyu is still curled against him, eyelashes fluttering in his sleep, but he sees that Soobin is already awake.
“Um,” Kai starts, feeling the omega stir at his voice. “Can I use your shower?”
“Of course,” Soobin replies. “Mind if we join you?”
Beomgyu lifts his head, suddenly fully awake. “Good idea! Y'know, for the environment. Or something.”
Kai chuckles, agreeing.
While the shower starts off innocent, it devolves fairly quickly. Mostly thanks to Beomgyu, who insisted Kai's fingers would be best to clean him out because ‘they're the longest’. The beta ends up fingering him while Soobin uses his mouth until the omega comes, twice. Beomgyu pouts when the other men decline his offer to return the favor.
“My dick might literally fall off,” Kai says, finally starting to actually wash up.
When they emerge back to the bedroom, towels on hips, Kai goes straight for his clothes, all strewn about the floor. He distantly registers Beomgyu and Soobin chatting, something about how they'll sleep in Beomgyu's room tonight and deal with changing the sticky sheets on Soobin's bed tomorrow.
Just as Kai is considering putting his crumpled clothes back on, Soobin calls to get his attention.
“Kai, catch!” The alpha throws a pair of boxers his way, then a t-shirt and some sweatpants. Kai shoots him a grateful smile and dresses as quickly as he can. Despite being basically the same height as Soobin, his t-shirt is a tad more fitted than Kai would usually wear. He pushes aside the pang of self-consciousness, needing to focus on ripping the band-aid off. He knows it must be his time to leave. They invited him for a threesome and now the sex and even aftercare is over. Kai has no business being here. He suddenly laments not taking advantage of the situation more, wishing he touched and kissed and held more while he had permission. But it's over now, and Kai would hate to overstay his welcome.
The others are still in various shades of undress—Beomgyu pantless and Soobin shirtless—when Kai clears his throat.
“Well, I'll leave now.” He tries to smile easy-goingly, as if this was as casual to him as it was for them. He mustn't be very successful, because both of them frown in response.
“Why?” They respond in unison, and Kai feels a wave of déjà vu from earlier. He hesitates.
“I don't want to intrude. This was, um. Good. Really good.” He winces at his own awkwardness.
The other men exchange a glance before crossing the room to stand in front of him.
“Kai, we meant everything we said tonight,” Soobin says, looking meaningfully into his eyes.
Kai stares blankly, trying to wrack his brain for what the alpha could mean by that. The whole night is kind of a horny blur at this point.
“Uh. You want to be…fuck buddies?” He throws out a random guess.
Soobin begins shaking his head, but Beomgyu interrupts before the alpha can speak. “If that's what you want, then we can discuss that, for sure.”
Soobin nods, taking Kai's hand in his own. “But we want you to be our boyfriend. We planned to take you on at least one date before asking, but Beomgyu kinda got ahead of himself.”
The omega splutters. “Me? You were the one growling during a friendly game of Spin The Bottle.”
Soobin goes pink, more visibly flustered than Kai has ever seen him. “Shut up, I— I didn’t mean to.”
Kai blinks, pieces finally falling into place.
“Why did you growl?” His words stop their bickering in its tracks.
Beomgyu rushes to answer. “Because he wants you to belong to him. Do you want that, Kai? For us to be yours, and for you to be ours?”
He takes Kai's free hand, squeezing it hopefully.
Kai's head wraps around the entire night, week, years, all suddenly coming into focus with clarity. He finally catches up to everything, confident in his answer.
“Yes. Holy shit.”
What he doesn't expect is for Beomgyu to jump up and down on the spot, clapping to himself. He grabs Soobin's arm and shakes it as he hops side to side. The alpha just grins fondly.
Beomgyu turns back to Kai fully. “Sorry if this is a lot all at once but, fuck. I've liked you for so long and—”
“Not as long as me,” Soobin interjects. “I liked you first.”
The omega rolls his eyes. “Whatever. We have loved you for ages now and waiting just started to feel pointless.”
Kai's eyes widen. “You love me?”
“Yes,” Beomgyu beams.
“So much,” Soobin says.
Kai blinks rapidly, unexpectedly overcome with emotion. “Oh.” He swallows thickly. “I— I love you too. Both of you. I never thought this would happen…”
The smiles that greet Kai when he looks up are nothing short of blinding. Soobin brings Kai's hand to his lips, planting a small kiss.
“So you'll be our boyfriend?” Beomgyu insists.
Kai laughs incredulously. “Yes. Yes, I'd love nothing more.”
The omega tackles him with a tight hug, and Soobin wraps his arms securely around both of them. When he speaks, it's so soft Kai doubts he would hear it if he was even inches further away.
“I know we literally just started dating a few seconds ago, but you can move in anytime. We sort of…set up the spare bedroom for you. If you want it, no pressure. We can go at whatever pace makes you feel comfortable.”
Kai pulls back enough to see their faces. “You want me to move in?”
They look embarrassed, and it's sort of the cutest thing he's ever seen.
“Just…whenever you're ready. But yes, that's what we want.”
Kai nods, letting the fact sink in and envelop him with warmth. He is loved and wanted. He indulges for a minute more, then pulls away reluctantly.
“I want that too, eventually. Right now I should probably still go, though.”
Beomgyu tightens his grip on the beta's waist. “But why?”
Kai feels awkward repeating his reasoning from earlier, but with everything that's happened he's concerned the others have forgotten. “You're in pre-heat, hyung…your heat will probably arrive tomorrow.”
The omega activates his best puppy-dog eyes, tracing a finger down Kai's chest.
“Kai, you're my boyfriend just as much as Soobin is. I want you with me, if you're okay with that.”
Soobin brushes Kai's hair aside. “Stay with us,” he whispers, kissing the beta's neck. “Your omega needs you.”
Kai gulps.