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This isn’t the Cage, Sam tells himself, but the cold metal beneath his hand tells a different story. He grips the bar tighter, trying to catch his breath or his balance, Lucifer having stolen both as he batted Sam around from memory to memory. He’s trying to make a point, and while one part of Sam nods feverishly in agreement, willing to do anything to keep him happy, most of Sam is still able to focus on telling the devil no again and again.

It doesn’t upset Lucifer as much as it should. Sam expected to be snapped at, like the jaws of a zoo animal taunted with fresh meat before it’s pulled out of reach. Lucifer prowls like a wild thing closed in, back and forth across the cage, his eyes always on Sam. Sam swallows the choking lump of fear in his throat. Dean will save him. He believes that more steadfastly than he ever has in God. One more time, he raises his head to look Lucifer dead in the eye and tell him, “I’m not letting you in. We’ve been down that road, and I won't-“ Lucifer clicks his tongue, just once, not very loud, full of disappointment. Sam’s mouth snaps shut like a soldier’s salute, quick and automatic.

“We have, haven’t we? You were happy to say yes to me once,” Lucifer says. He crosses the cage again to the opposite wall, holding the bars in front of him to lean against. Sam stands up straighter.

“To throw you back in the Cage. And I did.”  Lucifer throws him a glance. There’s a proud smile gracing his lips that makes Sam stomach do a flip. He can’t tell if it’s fear or- Fear, he decides. He won’t let it be anything else.

“You beat me, fair and square," Lucifer says fondly.

“And you are never getting out.” Sam’s voice shakes traitorously on the last few words. Lucifer tilts his head, the tip of his tongue ghosting between his lips.

“The thing about that, Sam,” he says, very softly, and Sam’s heart speeds so rapidly he can feel it. Lucifer lets go of the bars, turning to Sam. He comes closer as he speaks. “No matter why you did it, you did say yes to me. You gave me everything, body, mind, soul…” Sam backs away from him. There’s nowhere to go, and the wall behind him is too close. He hears his back hitting it, a jarring clang of metal coupled with his own hiss from the unexpected collision. Lucifer doesn’t stop, stepping into Sam’s space like he owns it. He lifts a hand and rests his fingers against Sam’s sternum, trailing them up his chest leisurely. “I guess no one told you to read the fine print of that agreement.”

“What?” It’s all Sam can manage to say. Lucifer is far too close, far too real, but when Sam tries to squeeze out from between him and the bars, Lucifer’s gentle touch becomes as firm as the metal keeping Sam in. He chuckles.

“You can’t take it back. Once you say yes, you’re mine to use for the rest of time.” Lucifer’s fingers leap up from Sam’s chest suddenly and flick against his chin, jarring him from the beginning haze of dissociation. “All of this, dressing up and taking you out for dinner, seducing you, it’s for your benefit" —Sam shakes his head, a protest that’s less than useless — "but at the end of the night, you'll spread your legs for me whether you want to or not."

Sam grabs Lucifer’s arm to yank it away by force. Predictably, it gets him nowhere. Lucifer presses him into the cage wall until he can feel the bars bruising his back.

"Dean will come for me." He holds onto that, but Dean is a hazy idea against the sharp reality of Lucifer's hand creeping up his chest. It fits the curve of Sam's neck like it was made for him. He presses down, and Sam's head is forced back. He strains for breath, but that's more from panic than from the pressure of Lucifer's grip. He isn't choking Sam, not yet.

"Maybe," he agrees, "but that just means you'll be my ride out of here. The only way for Dean to keep me caged up would be to leave you in here with me, and we both know he can't live without his little brother by his side." Lucifer's thumb presses down against his pulse, and Sam feels light-headed. "You sure I can't hear that yes, Sam? For old time's sake?"

"Go fuck yourself." Sam has no cards to play here but his own anger, and Lucifer has always savored that. His hand slides further up, locking around Sam's chin to keep him still. Sam tries to jerk his head to the side on reflex and can't get anywhere. "If you can possess me, why not do it already?" Lucifer tilts his head.

"Oh, you think this is a bluff!" He sounds amused. His eyes linger on Sam's lips. "No, this is very real. I own you." Sam is expecting it. That doesn't make it any better when Lucifer leans in to kiss him. With no way to turn away, Sam fights back the only way he can, catching Lucifer's lip between his teeth and biting down hard enough that he would have torn it off of any other man. Lucifer moans against his mouth, pressing closer until his hips crush Sam's. Sam releases his lip when he feels how hard Lucifer is, fear flooding him with each slow thrust of the tented ridge of Lucifer's pants against him. "There's the Sam I remember. Stubborn. A fighter." Lucifer breathes it out like praise, "and so sweet to break."

Sam can't push him back or get any space between them. Lucifer takes everything he wants, whenever he wants. That isn't the worst part.

That's the heat growing between his legs, the arousal he can feel dripping out of him. His body knows who he belongs to. He wants to scream, but Lucifer's tongue pushes into his mouth. Sam's wordless protests are muffled as Lucifer fucks the forked tips as deep as he can. Sam bites down to no avail, and Lucifer's tongue squirms against his, filling Sam's mouth. It's barely a kiss anymore, only pure violation.

Lucifer grinds into Sam. The angle is perfect, and Sam hates it. Lucifer pushes against his dick, sending horrible shivers of pleasure up Sam's spine. He feels it well up in his chest, rising through his throat, and as he chokes on Lucifer's tongue, he can't stop the awful moan that escapes him. Lucifer pulls back, licking his lips like he can taste the echoes of it. Shame rips through Sam, and he puts his hands on Lucifer's chest and shoves with every bit of fight he has left. To his surprise, Lucifer stumbles back.

"I missed you," Lucifer says with an expression Sam can only describe as lovesick. "You left me all alone in the Cage with only Michael" — The name comes out harsh in contrast to the rest of his words. — "and my own hand for company. You know how that feels."

Sam shakes his head, barely catching his breath. He goes to wipe the spit off of his face (His or Lucifer's? He can't tell.) and blinks to find their surroundings changed again. Another memory. His head snaps around the familiar-looking bathroom as Lucifer leans against the sink. He brings a finger to his mouth, brushing it over his lips. The door to the bathroom opens and shuts quickly as Sam, his own memory of himself, enters. Very briefly, Sam can see the outline of an ever more familiar hallways, a picture of Amelia haphazardly hung on the wall.

"No," Sam whispers. He turns to look at Lucifer, horrified. Lucifer grins. The Sam of the past presses back against the door, mouth pulled into a tight line. His fists are balled. "Don't do it," Sam tells himself, knowing it won't matter. "Don't. He's listening, don't-" His memory doesn't stop, eyes shut tight as he slides his hand into his boxers. Sam hears himself gasp as his fingers push inside.

He fucks himself against the door, making an effort to stay quiet that can't keep the whimpers of, "No, no, stop, Lucifer, stop," from spilling out of his mouth. He gets rougher, forcing a third finger inside to feel it burn. Sam can't tear his eyes away from himself, not until Lucifer sidles up beside him.

"I ruined you real good, didn't I?" Sam swallows, but the evidence is right there, as his memory reaches an orgasm quicker and easier than he ever had before. His eyes roll beneath his shut lids as he pants Lucifer's name. The pleasure will only last a few seconds, Sam remembers, before it all comes crashing down into horrifying shame again. Who jerks off thinking about the devil raping them? "Poor Amelia. How many orgasms did you fake for her?"

Lucifer strokes up Sam's arm, and Sam jerks away right as the memory snaps out of view. Sam rams his side into the cage wall and groans in pain. "No one could ever be enough for you after me," Lucifer continues as he presses Sam back into the wall. Sam struggles, but his cheek ends up against the frozen metal of a bar anyway as Lucifer presses against his ass. "Lucky you, I'm right here, ready to remind you where you belong." He pushes Sam's pants down. "Stuffed full of my dick and begging to come."

"Let me go," Sam demands. It's bad enough for Lucifer to know he's gotten off to what was done to him in the past, but the thought of him feeling how wet Sam is now makes Sam want to die. Lucifer ignores him. He drags Sam's jacket off next, not caring for how the angle makes Sam swear as his arm is pulled back awkwardly, and then he gets Sam's shirt off. His cool fingers run up the length of Sam's back as Lucifer hums in pleasure. Sam's dick is swollen stiffer than it's been in years, and his hole aches with how empty it is.

"You've been taking good care of my vessel," Lucifer compliments. "Look at all this muscle. A few scars, but I'll fix those up when I make myself at home." His clothed cock presses between Sam's cheeks. Sam shudders. One of Lucifer's hands stays flat on his back to hold him in place, but the other slips around his front, running down through his treasure trail to the waistband of his boxers. Lucifer cups him through the fabric as Sam bites his lip to keep from making any noise. Two of Lucifer's fingers slot against his entrance, pressing into the damp patch Sam has made. "Soaked like a good bitch should be."

"Stop!" Lucifer's palm grinds against Sam's dick.

"You don't want this to stop. You're desperate for it." Lucifer finds the hole in the front of his boxers, and two fingers dip between Sam's lips, trailing up to the head of his dick before plunging down into him. Sam's body lets him in easily, and Lucifer sucks bruises into Sam's neck as his fingers pump in and out of Sam's wet hole. Sam is so wet that it doesn't even hurt, not until Lucifer spreads his fingers too wide. He forces Sam to whimper as his hole stings. "You're a little loose down there, Sammy. Got something you wanna tell me?" He pushes his fingers as deep as they will go, knuckles pressed to Sam's hole. "Were you hoping this would happen?"

Sam clenches around his fingers, even as he spits out a, "No!"

"You know you wouldn't be wet right now if you weren't such a slut," Lucifer tells him. "If you kept your fingers away from your dick while you remembered me fucking you. This is your fault." He drags his fingers free from Sam's hole, leaving only that aching emptiness behind. Lucifer brings them to his mouth, licking them clean. Sam can smell his own arousal, and it makes his stomach turn.

Lucifer's right. Sam had even left Rowena unsupervised, unable to help himself. All he'd been able to think of for weeks were his visions of the Cage, of Lucifer. They sometimes came to him as he was getting off. Sam had thought that was God telling him to stop, to focus, (and even then, he couldn't, he was so weak) but now he knows it was Lucifer in his head, taking advantage of how badly Sam had screwed himself up.

Sam tries to stop Lucifer from pulling his boxers down. Lucifer huffs against his neck, his teeth pressing a warning into the bruises he's already made.

He pulls his own cock out to push it between Sam's thighs. All Sam can do is grip the bars in front of him so hard that his knuckles go white. Lucifer takes his time, rocking back and forth. Sam can feel the scrape of his jeans against his ass. They aren't even real, but Lucifer makes sure Sam can feel that he's still clothed so that Sam knows how exposed he is. He slides between Sam's lips, bumping their dicks together. Sam's breath catches, revealing too much. Lucifer reaches down his front again, parting his lips to give him better access to all of Sam. His cock is covered in Sam's precome. He pulls back to nestle the head of his dick against Sam's hole, teasing it in until Sam can feel the stretch and drawing back again.

Sam squeezes his eyes shut, pressing his forehead into a bar. A tear slides down his face. "I'm going to kill you," Sam promises.

Lucifer kisses his neck sweetly as he forces his dick inside Sam. Another tear falls as Sam tries to keep Lucifer's cock out, clenching as hard as he can around him. All it does is make Lucifer groan, "Sam," as he pushes another inch inside, "Sam, Sam," the last repetition descending into condescending mockery, "we're going to be together forever." With one thrust, Lucifer buries himself as deep as he can. Sam's arms flex as he squeezes the bars of the cage. "Fuck, that's worth all the effort to get you down here. You're so hot inside." Sam feels him sliding out, inch by inch, before Lucifer thrusts back in.

It's as good as Sam remembers, and that's worse than any pain Lucifer could inflict.

Lucifer knows what angle to tug his hips back into, when to pause and grind deep into Sam, how to stroke his dick as he bottoms out so that Sam will whine helplessly. None of it is for Sam's benefit. It's all for Lucifer. Sam's grip on the bars is the only thing he can keep steady. He pants as he's shoved forwards into the frozen metal again and again, more bruises blooming across his body. Lucifer won't be quiet, letting Sam knows how good he feels around his cock with each moan.

"Stop," Sam hears himself say, though it sounds too weak. Lucifer's other hand wraps around his throat again, forcing Sam to either meet his thrusts or choke. Sam wishes he could say he chose death, but his hips move against his will, a desperate bid for survival (or his own broken need to let the devil mess him up.) Lucifer fucks him harder, relentlessly breaking Sam open. He pushes too deep, and it hurts, and all Sam can do is groan, "Stop, God, please-"

"He's not with you," Lucifer taunts. He strokes Sam's dick, his cock deep inside to feel Sam's walls convulse around him. Each squeeze forces Sam back to the present, to how thick Lucifer's cock feels. He's crying freely now. "You think Dad would trust you to fight the Darkness? You can't even resist me."

"No," Sam begs. It means nothing. Lucifer wrecks him, the pain deep inside Sam twisting into even more pleasure as Lucifer rubs his dick. "Stop! Don't touch me! Don't-" Sam's sobs break on an even harder slam.

"You know what's funny, Sam?" Lucifer asks, sounding like the cat who got the cream.

"I don't care, you piece of-" Lucifer's dick spreads him open again.

"I'm not even fucking you anymore," Lucifer talks over him. Sam's movements stutter to a halt. Lucifer is still, half of his dick twitching in Sam's hole. The grip on Sam's throat has gone lax, no longer pulling. Sam has no idea when he stopped. Sam's dick throbs, and the urge to shift back and let Lucifer fill him completely is overwhelming. He's already done it, part of him argues, and Lucifer's going to take what he wants either way. At least like this, Sam will be in control.

"Come on," Lucifer coaxes, "you know how good it'll feel. Fuck yourself on my cock." Sam takes an inch, and it's perfect, stretching him open as it sinks in. Lucifer's hands settle on his hips, but he still doesn't make him do anything. He lets Sam damn himself. "Take it all." Without thinking, Sam does as he says, obedient to the mind-shattering pleasure of being so full of him. Sam grinds back, the head of Lucifer's cock brushing against parts of him his fingers could never reach while he fantasized about this. Lucifer doesn't move, letting Sam use his dick like a toy, fucking himself harder and harder onto it. "That's it. It's not rape if you're the one doing it, right?" Sam's cheeks are freezing with tears and his fingers feel numb around the bars, but he uses them to ride Lucifer's cock, getting closer with each thrust.

"Hurry up, Sam, or you won't get to come," Lucifer tells him. Sam can feel his cock throbbing. "I'm going to load you up deep. When I walk your body out of here, it'll still be dripping with my come."

"You can't!" Sam feels dizzy, terrified and flying towards an orgasm he doesn't- shouldn't want. "Don't come inside me!" He doesn't stop moving. He can't. Lucifer slaps his ass, and Sam moans.

"Don't be a greedy bitch. It's your fault I'm so pent up." Sam shakes his head.

"Please," he begs. He sinks onto Lucifer's cock again, even though he can feel it twitch threateningly inside him. The spot Lucifer hit burns as Lucifer's pubic hair prickles against it.

"One way or another, you're leaving here full of my come," Lucifer tells him, and he slams Sam flat up against the bars again, their bodies pressed so close together that Sam's sure Lucifer can feel his heart beating through his skin. "I'm not picky where it goes," Lucifer hisses into his ear.

He pulls out, the head of his cock stretching Sam's hole as it leaves. Sam doesn't even have time to breathe without something inside him before Lucifer throws him to the ground. His elbows scrape the floor of the cage as he catches himself before his head slams into it. Lucifer pulls his ass up, spreading his legs to show off both of Sam's holes. He takes his cock in his hand, pressing the head against Sam's entrance again. "Pick a hole, Sam, and beg."

Sam can't let him come in there. (It would feel good, he knows it would, all that come leaving him wet for hours, ready for Lucifer to use again.) This isn't just a soul Lucifer is abusing. It's a body. Sam has no idea if he can get pregnant, but he knows he can't risk it.

"Come in my ass," he says, as quietly as he can manage. He knows it won't be enough for Lucifer.

"Louder." Lucifer's cock spreads his hole wider, barely inside.

"I want you to come in my ass," Sam begs. He bows his head, lifting his hips to try and get Lucifer's cock away from his hole.

"Good start," Lucifer says. He spreads Sam's cheeks. It's going to hurt. Sam shakes. "Keep going."

"Fuck my ass, please. Please!" The tip stretching his asshole burns in comparison to the easy, slick entry into Sam's hole. It's too big. "Oh, God, d-" Lucifer pauses, and Sam swallows down what he was going to say. "Fuck me. Sink your dick inside my ass and fill it with your come." The first few inches are agony. Somehow, that makes Sam groan, his dick twitching with each push. The pain digs deep inside him, loosening his tongue. "I want it, Lucifer, I want your cock! Fill me up!"

"You know what word I want to hear," Lucifer pants, his control a thin veneer shattered by his harsh thrusts digging deeper and deeper into Sam's ass, forcing it to mold around his dick. Sam is full again, and there's still more he has to take. "Scream it, Sammy."

"Yes!" Sam sounds broken. "Yes! Please, Lucifer!" Lucifer batters him against the floor, his dick dragging in and out of Sam's tight ass. His thrusts are barely eased by Sam's own precome still smeared over his dick. Sam pants raggedly, his breaths forced out, not enough room left for them when Lucifer fucks him.

Lucifer gets as deep as he can, and his dick pumps inside Sam. Sam can feel it, spurt after spurt of hot, thick come filling his ass. There's so much of it. Lucifer jabs his cock into Sam as he comes. He reaches around to pinch Sam's dick. All it takes is that one touch, and Sam comes, his body going limp as he milks Lucifer for every drop. It keeps going, longer than Sam knows it should, and Lucifer groans, "Feel how much I missed you, Sam?" He drags his dick out of Sam's clenching ass, the dregs of his load coming out in short spurts just inside Sam's rim and against his ass.

Sam sucks in a shaking breath. He can feel come dripping down his leg. His hole gapes without Lucifer's cock filling it, used up and sore. He wouldn't be surprised if he was bleeding.

"Nice of you to join us, Dean." Lucifer calls. Sam's heart stops. He forces himself up, only to catch sight of his brother's horrified, disgusted expression. Sam's hole clenches around nothing, leaking more come. Lucifer leans in close to Sam, whispering, "Don't worry. He didn't see all of that. Just... the last part. When you started to enjoy it." Dean takes a step back from the cage's edge. "You should have heard how he was screaming at me, right up until he heard you beg." Sam tears his gaze away from his brother, only to spot Castiel watching from even further away. He doesn't look angry, the way Dean is starting to, only sad. He can't meet Sam's eyes.

"Dean-" Sam tries to explain.

He doesn't get the chance. Lucifer pulls him close and kisses him. Sam freezes. It doesn't matter. He can feel Lucifer's grace invade him, taking up every empty space, wrapping around him until he can't breathe without Lucifer's permission. He becomes Sam's entire world, and then, he pushes Sam's consciousness into a safe corner of his mind and settles into his true vessel. It's like he never left.