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It starts with small things. Sam inquiring if Bucky ate yet, asking about his sleep, checking he's not hurt after missions.
It honestly annoys Bucky in the beginning. Like why was the man asking for his temperature, super soldiers can't even get sick. Or stopping by his room in the evenings to ask if his bed is comfortable. He's been sleeping in the same bed for seven months now, of course it'll do.
Over time, Bucky just gets used to the constant questions, check-ins and worried inquiries from Sam.
Then, it evolves into Sam leaving Bucky little notes. Bucky can admit, the first time he sees a small yellow piece of paper on the coffee pot with a written note reading "made coffee", Bucky finds it insanely cute. He's not used to getting notes or having people do things for him like leave him extra coffee in the morning.
So, Bucky doesn't say anything. He doesn't mind feeling cared for, it's kinda nice.
Then things get a little more... parent-like. For instance, one day Bucky has his boots unlaced on the Quinjet which he had purposely untied himself. Sam nonchalantly drops to his knees and reties Bucky's boots for him. He stands with the simple explanation: "Can't have you tripping over your laces, Buck."
That's the first time Bucky thinks this whole attentive act might not be as casual as he once thought.
But again, Bucky doesn't mention it.
Food becomes a big concern for Sam as in Bucky's consumption of food. Is he eating enough, is he eating healthy enough? Sam is on him all the time and proceeds to bring snacks on the jet these days.
The first time Sam feeds Bucky a bite of a protein bar, as in physically pushing the food into Bucky's mouth, with the demand "eat", Bucky and Joaquín certainly don't expect it.
Bucky chews on the forced bite of food in his mouth as Sam stands and leaves the bar for Bucky to finish, busying himself with other tasks.
Bucky's eyes lock with Joaquín's, who's staring with his mouth agape and amusement laced into every inch of his expression.
Bucky can feel himself turning bright red, can understand how embarrassed he is, but weirdly it doesn't bother him. Even with the immense humiliation radiating off him, Bucky still likes it. Likes that Sam is caring for him even if someone else happens to see.
Bucky knows this isn't necessarily standard behavior. He knows it's not normal for Sam to be feeding him and it is most definitely not normal for Bucky's entire lower body to be burning from how much he craves it.
Yeah, it turns him on. It didn't take Bucky long to realize this after things progressed drastically at home.
In the privacy of their own apartment, Joaquín would be on the floor if he saw the stuff Sam was doing. It's gotten to the point where Sam leaves clothes out in the morning for Bucky to wear and if Bucky takes too long to get dressed, Sam will march into his room and help put the clothes on himself. As in physically pull Bucky's shirt over his head, commands "arms" until he's able to slide it off Bucky's body and put a fresh one on. He never touches underwear. It must be some unspoken boundary, but truth to be told Bucky wouldn't mind if Sam crossed that boundary. He wouldn't mind at all.
Seriously, Bucky thinks he must have a brain defect or something. This can't be acceptable, can it? How can it be normal for Bucky to get this turned on with Sam acting like a damn mother hen. Doing every little thing for Bucky when he is perfectly capable of taking care of himself but it does something for him. It really does.
Bucky still hasn't said anything to Sam or anyone. The most he's done is question a few occurrences like the night he fell asleep on the couch and then woke up in his bed the next morning. He asks Sam how he got there.
"I carried you. You're heavy too," Sam smirks.
Bucky's cheeks warm at the thought. The image of Sam cradling him in between those big, firm biceps. Bucky wishes he was awake for that walk from the living room to his bedroom in Sam's arms. He can only imagine how amazing it probably felt.
When the head massages start, that's when things get bad. Bad as in specifically for Bucky's lower regions.
It starts seemingly innocent. Sam is doing Bucky's hair one day because apparently Bucky doesn't comb it properly or have any idea how to style it - which he doesn't. According to Sam, it's falling over his eyes too much. So, Sam takes the liberty of combing and styling Bucky's hair himself. Bucky can't help but sigh contently from the way Sam is lacing his fingers through his hair. Sam undoubtedly notices and soon begins offering nightly head massages.
How is Bucky going to say no to twenty minutes of scalp scratches nightly? He isn't but unfortunately, that also means twenty minutes of Bucky becoming insanely relaxed to the point where he feels really good, too good. The tingles always start around his head but end up between his legs by the end of it.
Bucky tries to hide it the best he can but he really should have known Sam was going to notice the boners eventually. Loose sweats can only hide so much.
It's the night Sam notices the bulge in Bucky's pants that everything changes.
Sam is staring at the thickening outline in Bucky's pants. Bucky had opened his eyes when the head massage halted and he now swallows nervously when he finds Sam looking down at all the evidence he needs - the blatant truth of what this is doing to Bucky.
At first, Bucky expects the worst but this is possibly the most naive assumption Bucky could have ever made. Of course, gentle, caring Sam was never going to reprimand him for something like this.
Sam's response is far from a reprimand, literally light-years from it.
"Baby, why didn't you tell me about this?" Sam coos while observing the obvious arousal before him.
Bucky's mouth hangs open.
They definitely have never spoken like this. Even with how much Sam babies Bucky, Sam's never called him baby.
More than that, he's referencing Bucky's erection like it's a sweet, silly surprise. His tone is so endearing.
"Why don't you lie down," Sam suggests.
Bucky obliges without even thinking. He lies back, his body thrumming with excitement as he watches Sam stand and start walking away.
His heart sinks, physically sinks, when he fears for a brief moment Sam is leaving him like this. Refusing to touch him, declining to have any part of this.
Thank God, he's wrong.
"You stay right there, I'll be right back," Sam notes as he's stepping into the bathroom.
Bucky sits in disbelief, his whole body pulsing. This is finally happening, he could never have prepared for this if he tried.
Sam comes back with a bottle of lube and places it on the nightstand.
Then Sam turns back and wastes no time reaching for Bucky's pants, pulling his sweats and underwear down over his hips until his erection springs free. Sam drags the fabric all the way to his ankles and slides them completely off. It's not until that task is done does Sam sit up straight and focuses on the one area he's yet to see before tonight.
"So beautiful," Sam shakes his head with admiration as if he can't believe he's allowed to look at Bucky's cock.
Bucky can't stop tingling, why does he love this so much?
Sam is squeezing some lube into his hands when Bucky stupidly wonders if they should talk about this. It might be a smart thing to step back and consider their friendship, partnership - although even if this stops right now, things could never be the same. Bucky would never be able to stop hearing the wonderful sound of Sam calling him baby. He'd never be able to stop thinking about Sam calling his cock beautiful with such praise, Bucky's levitating from it.
Still, maybe they should discuss this... whatever this is.
"Sam..." Bucky says tentatively.
"Don't worry baby, I know how to take care of it," Sam responds.
Like Bucky ever fucking doubted that. He gulps, too fucking turned on to argue with that. Alright, fuck their friendship, Bucky needs this to happen.
Sam pauses after this. He stretches over Bucky to look him right in the eyes.
"Do you want this?" his voice is different, it's serious. He's really asking and he's waiting for a response.
"Yeah," Bucky tries to answer firmly, but his voice scratches on the way up.
"Good, I've been wanting to take care of you like this for a long time," Sam reveals.
God, please take care of me, Bucky wants to plead, but he keeps his mouth shut.
Bucky lets his eyes flutter closed and presses his mouth tight. His intentions to stay silent must somehow be insanely obvious because the next thing Sam asks is, "Is there something you want to say?"
Bucky opens his eyes, his mouth falls open and he inhales a breath he didn't realize he was holding in.
"Uh..."
"Whatever you want to say, I'm all ears," Sam probes like he knows. Like he can read Bucky's fucking mind.
He can't actually say the words though, can he? Bucky's face is beating red at the thought of speaking them out loud. So, he only mumbles out an incoherent sound instead.
"What's that?" Sam says.
Sam's beaming, patient eyes zeroing in on him somehow draw the words out of Bucky.
"I want you to take care of it," Bucky gravels shyly glancing down at his awaiting body.
"Oh, I will baby. Don't you worry," Sam relays.
Bucky breathes a mixed breath of relief and exhilaration.
Then, Sam touches him, sliding slick fingers up Bucky's shaft so delicately it makes him twitch.
Bucky sucks in a groan, he doesn't know how in the world he's going to last through this. He's already leaking.
Sam pulls his thumb over the wet head and Bucky struggles harder not to moan, desperately biting the sound back.
"How's that baby?" Sam inquires so casually as he pulls his fist down the entire length.
"Good, good," Bucky nearly pants from the gratifying friction.
"Well, how can I know when you're being so quiet? I almost thought you didn't like it," Sam tuts.
Bucky's eyes widen.
"I like it," Bucky rasps under Sam's hand moving faster.
"Well, speak up for me."
"Okay," Bucky says softer than he's spoken all night which really defeats the point, but he can't help it. His breath keeps catching in his throat from how aroused he is.
"You like when I talk to you like this?" Sam checks and again there's a level of sincerity to his tone.
"Yeah - I can be louder," Bucky replies.
Sam smiles contently at the response.
"Good wanna know how you feel. Gotta make sure I hear exactly what you need. You know how I take care of you," Sam muses. "You just lie back and let me do the work."
And with that instruction, Sam slides down to his knees.
The second he starts lapping at the head, Bucky instinctually bites back his lip, eyes closing tight.
"Are you biting your lip?"
Bucky's eyes flash open, he releases his lip.
"Sorry."
"Just wanna hear you, baby," Sam says and dives back to Bucky's cock.
Bucky lets the moans slip out, they're consistent and gradually getting louder the more Sam's working him into his mouth.
Bucky whimpers and his face flushes when he hears the sound. That's when the hot heat of Sam's mouth leaves him and Bucky's eyes widen wondering if it was the pathetic sound at fault.
Sam's crawling up his body, hands slip under his shirt so the fabric can be guided up. Sam's leaving a line of kisses over Bucky's skin. Bucky shivers, forgetting all about the embarrassing whimper.
"Up," Sam directs softly and Bucky lifts his arms so his shirt can be removed fully.
This little task, removing his clothes, is something Sam's done so many times in the past few months, but tonight it has a whole new meaning. Has a whole new cause to send a vast warmth over Bucky's body. Sam's undressing him for such a different reason, Bucky's dying for it. Wants it so much it's scaring him.
Bucky's fears fade easily when Sam leans down and connects their lips for the first time. Bucky loses all his focus. Why haven't they kissed before? Bucky lifts up, wrapping his arms around Sam in order to get him closer. Sam lets his body drop down so Bucky doesn't have to extend himself and keeps kissing him while lying flat on top of him.
Sam pulls back with the most gentle smile.
"Gonna open you up nice and slow, okay?" Sam shares.
Bucky inhales slowly.
"Want that," Bucky hears himself say.
Sam stares down at him proudly like it's exactly what he wanted to hear.
"Let me do all the work," Sam repeats as a finger is already tracing around the muscled rim. Sam eases the finger inside and Bucky moans.
Sam leans down and swallows the sound in another wet kiss, prodding his tongue into Bucky's mouth.
A second finger joins the first and Sam's moving just as slow as he promised. Bucky tries not to thrust his hips up, but after it's been much too long for only two fingers, his body simply retaliates.
Sam smirks at the jolt of Bucky's hips.
"Be patient," Sam reminds him and leans down to busy his lips again.
"Will you fuck me?" Bucky asks.
"Is that what you want?" Sam questions, his fingers spreading out inside him now.
Bucky groans at the stretch.
"Sam, please."
"You don't have to beg," Sam retorts nicely.
Bucky's face flushes at his plead.
"Unless you want to," Sam adds with a grin.
Bucky can't decide if Sam wants the plead or not, gets so caught up in his own internal debate that he doesn't expect the gift of a third finger to enter him. He groans and it punches the words right out of him.
"Do you want me to beg?" Bucky implores.
Sam leans close to his face, laying a small kiss on his lips before answering.
"I want you to do whatever you're comfortable with."
Sam goes to draw back, but Bucky wraps his arms around him.
"Want you close," Bucky whines and begins sucking rough kisses into Sam's collarbone and chest.
Sam moans from it and Bucky shudders that he's the cause of that sound. He keeps going, trailing a hand down Sam's body when he realizes how one sided this has been.
"Can I touch you?" Bucky asks.
"Yeah, baby."
Bucky smoothes his palm down the front of Sam's pants. He's hard, but still fully clothed. Bucky needs to change that.
Bucky attempts to get Sam out of his clothes when they realize Sam's still three fingers deep inside of him. Sam pulls his fingers out carefully.
"Told you to let me do the work, baby," Sam quips, a smile tugging at his lips as he lets Bucky yank his shirt off.
"Need to touch you," Bucky murmurs as he's moving on to Sam's pants.
Sam lets Bucky undress him until Bucky's left to gaze at the naked man in front of him in all his glory. He's staring a little too long because Sam interrupts the ogling with a breathless kiss. Bucky's mind goes blank and he's falling back onto the bed, Sam spreading over him with their mouths joined together.
"Waited so long for this," Sam whispers when he breaks from Bucky's mouth.
Bucky stares in disbelief.
Sam only smiles, kissing the shocked pout off his face.
"Time to fuck you, baby," Sam declares simply and Bucky stops thinking. Who cares how long he missed how obvious this has been. Sam's about to fuck him.
When Sam's pushing into him, the last thing Bucky expects is the overwhelmingly blissful feeling of relief to wash over him. As if this is what he's been waiting for without ever realizing it.
"Please Sam - hard," Bucky requests.
Sam's head drops with a heavy exhale.
"Okay, fuck," Sam breathes unevenly.
It's said in his natural voice. Not the patient, authoritative one he's been using all night. Bucky swells with pride that his plead knocked Sam out of it, caused him to shed any exterior down to his raw desire.
And Sam doesn't disappoint in fulfilling Bucky's request. He rocks his hips in a steady pace gaining strength and speed with every thrust. It's good, so good it's dizzying to Bucky and he's not sure how he ever survived before experiencing this.
"Need this. Need this so much," Bucky hears himself babble at some point.
He's not even sure where the words are coming from. He's so lost in the sweet pain and pleasure coursing through him with every roll of Sam's hips.
He still manages to hear Sam's answer though.
"Gonna give it to you, gonna take such good care of you."
Bucky shudders uncontrollably, his body requiring the words, demanding more.
Sam burrows his face into Bucky's neck. Marking spots down the skin with his mouth. His hands glide up the back of Bucky's hair before he sits back on his heels, positions himself just right and really slams into Bucky, rough and hard.
Bucky groans loud, whimpering Sam's name and letting his eyes roll back in the rapture. His release teetering so close to the edge, he's going to lose it any second now.
His body arches up and Sam only pulls him closer, deeper, pounding into him faster.
"So good for me, always so good for me," Sam gruffs over him.
It's unfair how much the simple praise does to Bucky. Scorching through him like a flame until he's coming so hard, he's hollowing, grabbing onto Sam to steady himself through the eruption.
Sam slows, he's kissing under Bucky's ear, inching over to his jaw and brushing feathered kisses to the edges of Bucky's panting mouth.
Bucky manages to gain enough sense back to realize Sam's pulled out and he's stroking himself languidly as he's watching Bucky calm.
Bucky haphazardly reaches for Sam, wanting to help, but he's so worn out he doesn't protest when Sam gently pushes his hand away.
"This is all I need, baby," Sam gravels and then his eyes are slipping closed, chin tilting back and Bucky watches Sam shoot his load all over his stomach. It's beautiful.
Sam's breathing heavily after his release, leaning back over Bucky to kiss him endlessly. Bucky kisses him back, wraps his arms tight around Sam so he'll stay close. He doesn't care about the mess in between them, he forces Sam down so they're flush together.
He sighs happily.
"Always gonna take care of you," Sam adores, smoothing his hand down Bucky's face.
"Fuck - I love you."