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Mornings have always been Sam's favorite part of the day. Dad drilled early rising into them from a young age, but where Dean always took it as a trial, it was one of the few things from how they were raised that Sam really appreciated. He loves being awake before anyone else. Sometimes, before the sun's even risen and the birds are calling outside. Those days are the best. Sam used to spend them getting the lay of the land before a hunt, scoping out a joint to grab breakfast or the blocks around their motel on his run.
Nowadays, he tends to use that time for something else.
It took a little... a lot of convincing to get Lucifer to sleep. First, they had to figure out it was possible, but Sam had seen Cas pass out enough times that he figured angels could probably reach unconsciousness voluntarily, too. Then, he had to get Lucifer to actually do that. Easier said than done. Lucifer was not a fan of losing control, even over tiny, temporary things. The idea of being bound inside a sleeping body, vulnerable in a way he had never experienced before, obviously scared him, whether he would admit to that or not. Sam had coaxed him into it, and only with the promise that he would be there the entire time had he been able to get Lucifer to fall asleep that first night. Sam had watched over him like a hawk, ready to jump in at any sign of disturbance. Lucifer had slept peacefully the entire night, and in the morning, he was soft and relaxed in a way Sam had never seen before.
Sam spent a lot more nights with the devil cuddled up beside him than not. Enough that Dean had started demanding they get separate rooms. Not that Sam was complaining. That meant he was free to do whatever he wanted with Lucifer without worrying about Dean seeing and taking something the wrong way.
Physical touch was a big thing with Lucifer. He'd constantly have a hand on Sam if he could, fixing his hair, touching his arm, resting lightly against his spine. At first, Sam had thought that was for his benefit. He enjoyed the constant reassurance of it, the way that Lucifer would always pause in whatever they were doing to lean into Sam or wrap an arm around him. All of that had been before they'd slid into something more, a relationship that Sam's still not sure how to define. When given permission, Lucifer became bold with what he was newly allowed, kissing Sam and wrapping himself around Sam and pressing his face into his neck to whisper to him.
It took Sam longer than it should have to realize that, yes, those moments were for Sam, but Lucifer was getting a lot out of them, too. It made sense. Most of his life had been defined by isolation.
With sleep came a chance to be cuddled up next to Sam and know he wouldn't leave for the rest of the night. To feel safe as he did so.
The power difference between them meant that there wasn't a lot Sam could give Lucifer, but this? He'd let him have it every night.
Lucifer never wakes on his own before dawn. Sam knows that through extensive testing. He'll rouse if Sam calls him or shakes him (something Sam has had to do once or twice. Sleeping comes with the chance of nightmares. He's surprised Lucifer doesn't have them every night, but then again, his own have stopped happening as often now that they sleep together.) but if left alone, he's dead to the world. There's a warm, fuzzy feeling that gathers in Sam's chest whenever he wakes up early enough to catch Lucifer like that.
He's pretty like this, not in the overwhelming, slightly terrifying way he can be when he's conscious, but in a way that makes him feel tangible. Like he really is Sam's, and Sam can reach out and hold him whenever he wants. He does just that, propping himself up on one elbow and cupping Lucifer's face. Lucifer's mouth twitches, but he settles, undisturbed. The stubble on his face scratches against Sam's palm, intimately mundane. Sam lets his hand slide down, fingers ghosting over Lucifer's neck and down his arm. Lucifer's turned towards Sam on his side, and before Sam pulled away a little, he'd wrapped his arm around Sam's waist. It's lying abandoned in front of him now, not yet tugged back under the warmth of the blankets.
Sam turns his hand over. He traces the veins in Lucifer's wrist, feels the pulse under his fingers that Lucifer doesn't need but that beats anyway. Lucifer breathes, too. It's very quiet, but Sam's senses are tuned to ghostly footsteps and creaks in the walls. He can hear Lucifer exhale, the rhythm of it never faltering. For all he's claimed to despise humans, he's shockingly good at existing in the skin of one.
Sam nudges his chest right between the long-faded scars until Lucifer slides onto his back. They're the marks of someone who had a lot of time to recover afterwards, subtle enough that someone who didn't know what to look for might miss them. Sam's never asked, mostly because he's never figured out a natural way to bring it up in conversation, but it doesn't feel like a coincidence that the vessel Lucifer wears and Sam, the one meant for him, both had a hand in reshaping themselves. Sam's own scars are more obvious, stretched out because he didn't have the luxury of resting a lot after his surgery.
Lucifer kisses them a lot. He all but worships the parts of Sam that Sam's fought to have. Sam returns the gesture now, leaning over and bowing his head to Lucifer's chest. He presses his lips gently to the scars, feeling the texture of them under his mouth. Lucifer doesn't stir, nor does his breathing stutter. Sam looks up at him and finds his head has fallen to the side, mouth tilted in a half-smile. He has nightmares, but he has good dreams, too. Sam wonders if he's having one now, what it might be about. He peppers Lucifer's chest with more kisses and hopes he can feel them, wherever he's drifting in his subconscious.
Sam moves down his body, mouthing along his sternum and the soft curve of his stomach. He slides the blankets down with him, and that might be the only part of this that elicits a negative reaction from Lucifer. He sleepily grabs at the covers as Sam takes them, and Sam laughs under his breath as he fends off the archangel. Lucifer's got no inhuman strength here, and he has to let the covers go. His mouth purses in his sleep, and Sam does his best to assuage him with more kisses. He'll have Lucifer all bundled back up in a minute.
This is all something Sam was sure to discuss with him before ever doing. He's already putting a lot of trust in Sam to sleep beside him when Sam is one of the few beings on Earth who knows how to kill him and make it stick, and Sam would never violate that trust. Especially not to Lucifer, who, even at his worst, has always put Sam's consent first and foremost, though his understanding of what consent even is has not always been great. Lucifer had seemed amused when Sam brought it up. Sex is as new to him as sleeping is, and just as vulnerable and pleasurable. Combining them? It took basically nothing to convince him.
Sam slides down between his legs, nipping at the inside of Lucifer's thigh until he hears a huff. Still no sign of waking, though. Sam takes his time, grazing Lucifer's skin with his teeth, nibbling hard enough to leave little red marks up and down his thighs. All the while, Lucifer's exhales speed up until Sam falls back into gently kissing him again, and only when he hears Lucifer settling down does he bring his teeth back into play. He drags Lucifer back and forth, teasing and calming, until his body starts to get the message despite him still being far down in dreamland.
Sam can watch him get hard as he nips his way up Lucifer's thigh again. There's a little envy there. Sam had time for top surgery at Stanford, but he'd still been on the waiting list for bottom by the time everything fell apart around him. He'd never slowed down long enough afterwards to try again. Now, with the future not looking quite as dark as it did a year ago, maybe he will. (Or, maybe he'll take Lucifer up on his offer and let him handle it.) Whatever happens, right now, he's a lot more concerned with watching Lucifer's dick twitch enticingly. Sam licks his lips. He spreads Lucifer's legs further apart and moves in, mouth sliding up to the base of his dick. Hair tickles his nose as he laps at the base, pressing Lucifer's dick down to feel it poke back up again. Sam drags his tongue down to the tip, passing the bump of foreskin to lick the head. He can hear Lucifer's breath stutter again. Sam swirls his tongue around the head lazily before pressing a kiss to it and going down, lips pressed against underside of Lucifer's cock, following the straight shot to his hole. Sam teases his hole, feeling it clench around the tip of his tongue before slowly pressing inside. Lucifer's tight. Too tight, usually, for any of Sam's straps, not without a lot of foreplay, but just perfect for Sam's tongue or a probing finger.
Sam flicks his tongue against Lucifer's entrance a few times before sliding it in again, mouth pressed against his hole like he's kissing it deeply. Lucifer sighs in his sleep. Sam glances up automatically and stifles a laugh when all he sees is Lucifer's dick, waiting for him to come back and suck it properly. With another twist of his tongue, encouraging another soft sound from Lucifer, Sam goes back up to the main event. He takes Lucifer into his mouth slowly, savoring every centimeter as it slides over his lips and tongue. Lucifer's dick is nearly the size of his thumb, and he fits Sam's mouth perfectly. Sam curls his tongue around the length of it and feels it throb.
He sucks very lightly at first. Lucifer mumbles something unintelligible, probably not even in English. Sam lets Lucifer's dick slip back out of his mouth, and Lucifer makes the same face he did when Sam took away his blankets. Sam turns his head to smother a laugh he can't restrain against Lucifer's thigh and then bites him again for good measure. "Ah," Lucifer gasps, and Sam lets him go. He waits for a minute, but Lucifer doesn't say anything more and stays asleep.
He takes Lucifer's dick into his mouth faster this time, engulfing the whole thing in wet heat. Lucifer's mouth falls open around another gasp, a lower pitch that the one Sam got from biting him. His legs tense around Sam's head but fall limp again as Lucifer adjusts to the sensation. Only for Sam to start sucking and moving up and down his cock. Lucifer tosses his head as a moan escapes him, and Sam would smile if his lips weren't wrapped around Lucifer's dick.
Lucifer wakes up quick when he's having a nightmare or when Sam needs him. That he's taking all of this and staying under shows an insane amount of trust in Sam. Sam slows again, taking Lucifer fully into his mouth and letting him stay there for a minute before pulling off again, a short strand of spit breaking between the head of his dick and Sam's lips.
It's an idle thought, spurred by something Lucifer mentioned about Sam's prayers all coming to him in the end. Sam feels a little silly at first, bowed over his dick and praying. It's nothing too complicated, mostly Thank you, thank you, thank you topped off with I'm going to make you feel so good, you deserve this, and even a little Amen at the end. Sam watches Lucifer as he finishes. Lucifer frowns for a moment, eyes moving under his lids often enough that Sam knows he's dreaming. The frown fades into a lovely smile. Lucifer arches in his sleep, murmuring something else that Sam can't understand, but the meaning isn't hard to pick up on with how Lucifer thrusts up into empty air.
When Sam starts licking his dick again, Lucifer makes a noise that's all pleasure, rumbling deep in his chest. Sam pulls his cock back into his mouth. He can feel Lucifer's redundant heartbeat against his tongue. It's pulsing hard in his mouth.
"Sam," Lucifer mumbles. Sam looks up. Lucifer's eyes are still shut. His head is still tilted away from where Sam's sucking his dick. Sam reaches for one of his hands and brings it down to rest on the back of Sam's head. The fingers tangle in his hair but don't push or pull, holding on to Sam like the sensations will sweep Lucifer away otherwise. "Sam," Lucifer moans again as Sam sucks his cock. "Sam, that's- Mm."
Sam can feel him getting closer, both to waking up and to coming. If he times it right... Sam plays with the sensitive head of Lucifer's cock inside his mouth, rubbing his tongue over it, back and forth. Lucifer twitches and tenses, the pleasure coursing through him dragging him to consciousness. That’s Sam's cue to swallow his cock down for the last time.
"Sam!" Lucifer cries out. His eyes open, but before he can react to anything, he's dragged into an orgasm. He thrashes under Sam, hips jerking to press his cock into Sam's tongue over and over as he comes, soaking Sam's chin. His hands clench in the sheets as he moans. Sam keeps up the suction as he comes, tapering off when he hears Lucifer whimper from above him from overstimulation. Sam lets him go. Lucifer's still hard, but he usually is after an orgasm. That's not permission to push him past his limits, and so Sam crawls back up his body, dragging the blankets with him. There's lazy, warm arousal curling in Sam's gut, too, probably a damp spot in his boxers. What can he say except that he likes giving head?
Lucifer exhales heavily. He sinks into the mattress, eyes flicking to Sam. Sam leans over to kiss him, heedless of Lucifer's come slicking his face. Lucifer kisses back, sated and sweet with it. He licks his own come from Sam's face, humming at the taste, before Sam pulls back and wipes himself off on his arm. Lucifer casts his gaze to the window across the room.
"The sun isn't up," he says. His voice is rough, like he's the one who's been sucking dick the past while instead of Sam.
"I know," Sam says. He tucks the blankets up around them again as Lucifer turns and curls into him. "It's the only time of day I can surprise you."
"You're always surprising me," Lucifer says. He squirms until Sam lets him come closer. "But go back to sleep. It's too early."
"You enjoyed it, though?" Sam asks. Lucifer hums. He's fighting off falling back into a doze. Sam can tell from the way he noses at Sam's neck.
"A lot. You should keep doing that." Sam relaxes, closing his eyes again. He probably won't fall asleep, but it's nice to lay here and hold Lucifer. In less than an hour, they'll both have to be fully awake and ready to start the day, but for now, they can drift in this moment of pleasure and peace.