Chapter Text
It started off innocently enough.
Robby was at work, it was nearing the end of their shift, and he realized that Dennis hadn’t stopped to take a break all day.
When he saw the young doctor walk by, tablet in hand, on his way to his next patient, Robby placed a strong hand on his shoulder and said, “Ah, ah, ah.”
Dennis stopped and looked up at him. “Yes?”
“Have you eaten today?” He knew he should try and keep things more professional between them at work, but his concern overpowered any sense of decorum he might usually have.
It hardly even mattered if Princess and Perlah shot them nosy looks- their relationship was an open secret in the ED and it had been for a while.
Dennis’ ears turned an adorable shade of red. “Um. I’ve been pretty busy.”
“Sit. Go and eat, I’ll deal with this.” He swiped the tablet out of his hands.
“I’m fine. My shift’s almost over anyways- I can just wait.”
“Nope." He popped the p sound. "Don’t care. Go eat, now.”
Dennis rolled his eyes. “Yeah, okay. Thanks, dad.” The second the word left his mouth, he clammed up and blushed even darker.
Robby crossed his arms and raised a teasing eyebrow. “What was that?”
“S-I’m- bye.” Dennis whirled around and nearly sprinted away.
Robby's gaze followed him. Alright then.
It was endearing to see Dennis get so flustered, but Robby didn’t think much of it.
He had forgotten the incident entirely until about a week later, when Dennis came over to Robby’s place after work, as he did most nights.
Dennis was laying on his back on Robby’s bed, naked, with his hands laced behind Robby’s neck, pulling him close.
Robby fucked him at a harsh pace, pulling shaky gasps from his pretty lips. He was so focused on the feeling of Dennis’ wet cunt pressing around his cock, he almost didn’t hear the words stumble out of Dennis’ mouth.
“M’fuck, Daddy.”
Oh. That’s new.
The whiny, high-pitched way he said it went straight to his cock.
Robby’s hips stuttered and Dennis’ eyes widened as he realized he said that outloud. He quickly stammered, “I- uh, sorry?”
Robby smirked and started thrusting again. “Don’t apologize, you can call me whatever you want.” He leaned down against his forearms and shoved his hips roughly against Dennis’, successfully forcing out another small “Daddy- ah, I’m close,” from his boyfriend.
Robby’s permission was all Dennis needed. After that, he started using the title more and more.
When Dennis rode Robby on his couch, slow and deep, he whimpered, with his big, wet eyes, “Daddy, daddy, please can I come?” Robby had to throw all his energy into not finishing far too quickly when he said that. His grip on Dennis' waist tightened and he dragged him up and down his cock, with a new wave of desire.
When Dennis had his legs spread, with Robby licking at his cunt desperately, he sighed, “Oh my god, so good Daddy.” In response, Robby said, "You taste so good, baby. My sweet boy." He felt another rush of wetness against his tongue.
Dennis would get this hazy look in his eyes, like he was somewhere else in his head, before coming back down to reality.
Robby would be lying if he said the term didn’t go straight to inflating his ego. It made him feel competent, in control, and a little bit dirty in a way he particularly enjoyed.
The fact that Robby was old enough to be his dad- that if people saw them together on the street they might assume that- it made his blood warm up.
From the way Dennis’ eyes clouded over with lust, he knew Dennis felt the same way.
Robby wasn’t blind. He could tell Dennis was distracted.
The two of them were baking cinnamon rolls that Dennis planned to bring into work the next morning for everyone to share, but every few minutes, Robby had to drag his attention back from wherever it floated off to.
Robby said, “I’m still worried Abbot will throw a fit if we don’t save any for him-” Robby was already through with shaping his eighth roll, and was going to get more dough, when he glanced over and saw Dennis staring at the kitchen counter. He had only finished three rolls so far and had stopped moving completely.
“Den, are you okay?”
His eyes shot up and met Robby’s, guiltily. “Huh? Oh, yeah. I’m good. Just thinking.”
Another few minutes passed as Dennis hummed to some funk song that Robby didn’t recognize and stacked the rolls onto the baking tray.
Robby prodded, “Are you gonna tell me what you were thinking about?”
“It’s nothing important.” His tone, however, implied otherwise.
Robby washed his hands and then crowded Dennis up against the counter. Dennis tilted his head up to look at him. Robby narrowed his eyes. “Are you sure?”
Luckily for him, Dennis cracked easily. He said, in a quick breath, “It’s really embarrassing.”
Robby frowned. “Is it a work thing? Did you make a mistake?”
Dennis shook his head. “No, it’s nothing like that.”
“Is it… is it an us thing?”
He nodded.
Robby realized he'd have to pull whatever Dennis wanted to say out of him. “Is it a sex thing?”
Dennis nodded again, far slower. His eyes were big and nervous.
It was fascinating to see the way he’d swing between being so blunt and excited about whatever new scenario he’d come up with, all the way back to staring at Robby like a deer in headlights. They’d talked about whatever odd sexual fantasies they’d had before, but Dennis still sometimes treated the topic like he was carefully stepping around broken glass.
They both had unconventional desires- it was fine.
Robby said, “Dennis, sweetheart, come on. It’s me.” There was a lot said in those few words. I love you. I know you. You know me. You can’t scare me away.
Dennis picked at his own fingernails. “You know how I’ve been um, calling you daddy recently?”
“Yes?”
“How… how far are you open to going with… that?”
Robby tilted his head to the side and asked, “What, like, you want to call me that outside of the bedroom?”
“No. What I mean is, how- would you- fuck. I can’t say it." His face scrunched up uncomfortably. "It’s a lot. More than the other stuff we’ve done.”
After spending so much time with him, Robby knew how to get Dennis to peel open and dump all of his squishy-vulnerable bits out to him. He rubbed his arm comfortingly and said, “Would it be easier if you weren’t looking at me?”
Dennis nodded. He dropped his forehead onto Robby’s shoulder and screwed his eyes shut. A few of his curls tickled Robby's neck. His voice was half-muffled by the fabric of Robby’s shirt. “Would you want to pretend to be my daddy? While I’m um, little?”
Robby didn’t know much about that specific subtopic, but that didn’t mean he was uninterested. He liked when Dennis looked at him blissfully and with the certainty that he could relax because Robby would look after him. Robby wrapped his arms around Dennis, careful to not startle him. “Ah. And you want me to fuck you while you're little?”
Dennis’ eyes screwed even tighter and his whole body went tense. “Yes.” He swallowed. “I’ve seen a lot of stuff and sometimes I want to be small and innocent again, with someone who’s older than me and-and knows more than me, who can keep me safe.”
“And is that someone me?”
“Mhm.”
Robby rolled the thought around in his head. He admitted to himself that he found the idea of taking Dennis' virginity to be extremely appealing. He was just so sweet, the need to look after him was already engrained deep inside of him. He loved seeing Dennis helpless and overwhelmed. He liked being the one in control.
Robby said, “Okay. We can do that.”
A single blue eye peeked up at him. “Really? It’s not too weird?”
Robby chuckled. “Dennis. Who exactly are you talking to right now?”
“I know but still, this is extra weird. I just think that you’d be a great daddy.” He added, quietly, “You’d take very good care of me.”
Robby tilted his chin up. He spoke clearly and confidently- he knew Dennis needed that sureness. “Hey. You want to be my baby?”
Something in his gaze softened and his shoulders relaxed. “Yes, please.”
“Then that’s it.”
“Seriously?” It came out with a tinge of hopefulness and trepidation.
“Yeah. What do you need? We can get you stuff like plushies or a binkie or something if that helps. I’ll have to do some research, but we can pick a date and-”
And then, without warning, Dennis started crying.
Robby held his face gently, alarmed. “Woah, Den, what’s wrong? Did I say something?”
He shook his head. “I just really love you. I feel like such a fucked up freak sometimes.” He sniffled. “But when I’m with you, it’s not so bad. You make me feel normal and like, maybe there’s not something wrong with me.”
Robby wiped a tear off of his cheek. “It’s okay, sweetheart.” He pressed a kiss to his nose. “I love you too.”
The moment was interrupted by the oven loudly beeping, to announce that it was done preheating.
Robby said, “Okay. Let’s get these in the oven and then we can talk about it.”
A few minutes later, Robby and Dennis were in a position they’d been in before, sat on the couch, facing each other. Dennis stretched his legs out over Robby's lap. His eyes were still slightly red from earlier. The warm smell of baking cinnamon began to fill the house. Robby said, “Do you have a specific age you want to go with?”
“Um, not exactly? I want to feel little and-and protected, that’s what’s more important than realism, I guess.”
He settled into a clear conversation. “We can do that. Do you want me to be nice to you or mean?”
“Nice, please. Maybe a bit stern, but still with lots of praise. If you start being rough with me or insult me when I’m like that I might actually have a meltdown.”
“Okay. Got it. What’s the dynamic here? Am I being bad? Am I forcing you?”
“Mm, not really. I’m not gonna push back, but I want to be really naive, y’know? Like I don’t know anything and I need you to guide me through it. So, yes you’re kind of being a creep but it’s not that I don’t want it, it’s that I need your help. You want to take care of me, and this is just another way to do that.”
Robby nodded and started to plan out what it would look like in his head. He'd have to speak slowly, maybe repeat himself a few times and keep his words simple- nothing too complicated.
Dennis leaned back and said, “Sorry. I know it’s strange.”
“Strange to who?” Robby gestured around the room. “It’s just us here, Den.” Robby leisurely rubbed Dennis’ feet that were propped up on his thighs and said, “Keep going. So, you’re gonna be little and you’re gonna need my help to make you feel good. I’ll talk you through it all. Yes?
“Yes. I’ve never actually done this before, but I think I just sorta miss being a kid? Some parts were bad, but it was nice not having to worry about things like bills or work or student loans. I could just exist.” Dennis chewed his bottom lip. “I want you to talk to me like I’m dumb kid, like I don’t know anything, because I don’t. I don’t want to know anything. I want to turn my brain off and shove it in my closet for a little bit.”
Robby could do that. “Same rules?”
Dennis nodded.
Robby said, “Can you repeat them back to me?”
“Green is keep going, yellow is slow down, and red is stop.”
He smiled. “Good boy. Look at you, remembering just what Daddy taught you.” Dennis’ blush darkened and Robby saw desire flash across his face.
Robby paused and asked, “Is it… do you want me to call you ‘son’?”
Dennis shook his head. “Not really. It’s less of a family thing and more of an age and power thing. What matters is that I don’t understand how sex works and I’m putting all my trust into you to make sure I feel good- that’s the meat of it, I guess.”
He thought about what Dennis had admitted to him, back when things were still new between them. About how much he regretted the way he lost his virginity. It was a quick, fumbling affair when he was sixteen with a guy who hadn’t bothered to do proper foreplay. He hadn’t been taught what sex should be like, so he just accepted that it was meant to be uncomfortable and leave him feeling dirty and wrong.
Robby massaged the sole of his foot and hummed. “You want me to be slow and soft?”
“Yes.” He smiled. “No fucking me into the bedframe. At least, not for this.”
“I’ll make sure to check in on you more than usual.”
“Okay.” Dennis squirmed in place. “I don’t know for sure since I haven’t actually done it before, but I think I’m going to be pretty sensitive? Emotionally, I mean. So-”
“More sensitive than you are usually?”
Dennis kicked the side of his arm and said, “You’re such an ass.”
Robby leaned over and kissed him warmly. “I will keep it sweet, Den, I swear.”
He couldn’t fathom Dennis gathering up the courage to hand himself over so completely like that, only for Robby to be cruel to him. He simply couldn't.
Robby smiled against his lips. Dennis noticed and said, “What?”
Robby chuckled. “Nothing, it’s just funny that when we first started dating you used to get mad at me whenever I called you ‘kid’ and now… well…”
“Fuck!” Dennis shot up from the couch.
Robby startled at the outburst. “What? What’s wrong?”
Dennis smacked his hand to his mouth. “The cinnamon rolls.”
“Shit.” Robby forgot to set a timer. He rushed to turn off the heat and the two of them winced when they opened the oven door.
A distinct burnt smell spread throughout the kitchen.
Most of the rolls ended up charred and blackened. Dennis laughed. “Well, at least we tried?”
They ended up eating the ones in the middle that were salvageable, if a bit crunchy.