Family Affairs | Part 1

Pairing: Dean x Sister!Reader x Sam 
Rating: 18+
Tags: dark pornStar AU, grooming, sibling incest, dub-con, references to underage witnessing of sexual acts/watching of porn, choking, dirty talk, female masturbation, making out, groping
WC: 2,500

Created for: Bee!! When she came to me with this commission idea I absolutely DIED and we immediately started brainstorming and I’m SO excited to finally be writing and sharing this with you all 🖤

Masterlist

“That’s it baby boy, nice an’ quiet,” Dean cooed. 

“De,” Sam panted heavily, clearly straining to keep his voice down in the dark of their trailer bedroom. “Not now, please,” Sam begged. His eyes flicked sideways, landing on the sleeping figure of their sister, snuggled up under the tattered quilt they’d all been sharing. 

“Smile for the fans, baby brother,” Dean smirked, pointing to the tripod he’d set up on the side of their bed. Sam groaned, face screwing up as he turned away. “What, you don’t want people watching me fuck you?” he teased Sam, reaching down between his legs to poke at his hole, which was already loose and still a little wet with lube from what they’d filmed earlier. “Why’d you get hard as soon as you saw the camera, then?” 

“Dean, fuck,” Sam cringed as Dean shoved two fingers unceremoniously inside him. 

“Shh, don’t wanna wake ‘er,” Dean grunted, quickly replacing his fingers with his cock. Sam moaned and Dean clapped a hand over his mouth, working his hips to shove himself in the rest of the way. He pressed Sam’s head sideways on the pillow, facing him to the camera. Sam grunted, staring into the blinking red light atop the lens. 

“Please, oh god, please,” he gasped when Dean adjusted his thrusts so the tip of his cock nudged against Sam’s prostate each time he fucked in. 

“Keep lookin’ at the camera, baby boy,” Dean hissed, “want them to see your face when you cum on my cock.” 

“T-touch me, De, please,” Sam panted, trying to keep his voice down, but struggling.

“Aw, you need someone to touch that fucking dick? Want something warm,” Dean fucked their hips together with a meaty slap, “and wet,” another slap. “Maybe one day I’ll let you get your dick wet, but not to-fuckin-day baby.” 

Both brothers groaned as Dean brought his hands up to Sam’s throat and squeezed. Y/N moaned, squirming and rolling over beneath the covers, shoving her face into her pillow. The boys’ eyes flicked down to their sister, still sleeping next to them as they fucked for the camera in the moonlight. 

“Maybe one day, I’ll let you fuck her,” Dean grunted, yanking Sam’s attention back to him. “But right now you’re gonna be a good little bitch and cum on my cock, get yourself all fuckin’ messy for the camera.” 

–

Y/N moaned again, her hand moving faster over her clit in little circles as she watched her brothers on the screen. This was her favourite video of them. The fact that they had fucked with her asleep in bed right next to them, the fact that she’d never known… shit, the memory of how hard she’d cum the first time she watched it was still enough to get her going.

On screen, Sam gave a choked off little moan as Dean squeezed harder around his throat. His cock twitched on his stomach, spurting white over his shadowy chest, the cum catching the light of the moon and glinting in the camera. 

“Oh fuck, yeah,” she and Dean groaned in unison as her whole body clenched and her thighs started to shake. Her high crested just as her fingers began to cramp, her legs snapping shut around her hand as she came, whimpering, her stomach seizing up and doubling her over in front of her computer. 

“Y/N? Are you okay?” The bedroom door of their trailer swung open, and Sam stood in the doorway, staring, shocked, at his baby sister. She was curled up on the bed, naked and shaking, hand between her legs, and a video he instantly recognised playing on her screen. That was him and Dean, panting against each other as Dean fed Sam his own cum from his stomach – and Y/N had been getting off on it. His dick twitched in his jeans when their eyes met, hers growing wide as saucers. 

“Fuck,” she squeaked, frozen in fear. Sam quickly shut the door to the bedroom, even though Dean wasn’t home, he was due back any minute. “Sam! Leave, what the hell are you doing?” Y/N shrieked indignantly, flailing for a sheet to pull over her body. 

“What the hell are you doing?” Sam hissed, gesturing to the laptop that had now begun to autoplay another video. He looked at the screen, Y/N hadn’t just found them on a porn site, she’d found their actual website. 

The neon white banner flashed across the top of the page – FamilyAffairs.com. 

“I’m sorry,” Y/N whispered shakily, eyes refusing to meet Sam’s. “I never meant for you to find out.” 

“How long have you known?” Sam asked, vaguely horrified. He’d always thought they’d done a good job of keeping this a secret from her. Y/N flushed guiltily. 

“About two years,” she cringed, embarrassed. “Dean told me, when I asked how we were gonna pay rent and buy food and stuff after Dad left. He told me that you and him were taking care of it.” 

“And then he showed you our porn site?” Sam asked, voice climbing higher in his incredulity. He couldn’t believe Dean would do something that shameless. 

“No,” Y/N shook her head quickly, “no, he didn’t show me, I found it. Please don’t tell him about this,” she begged, clearly humiliated. Sam grimaced, yeah, he didn’t want to have that conversation with Dean either. Hey big bro, I walked in on our baby sister touching herself to our porn, and then I got a semi. No thank you. 

“I won’t tell him, it’s okay,” Sam reassured her. He ran his hands through his hair awkwardly, knowing he should leave but inexplicably not wanting to go. Finally he managed to unstick his feet from their spot rooted on the carpet and he turned to leave, but still lingered at the door. “Yeah, I won’t tell ‘im,” Sam repeated, looking back at Y/N, still cowering under the sheet on the bed. 

“Won’t tell me what?” Dean’s gruff voice sounded through the open crack of the door, and he pushed in brusquely past Sam. He immediately catches sight of the video playing on Y/N’s laptop, takes in her state of undress, and lets out a cackling laugh. 

“Well, fuck, sweetheart!” Dean spun on his heel to look at Sam. “You were gonna keep this a secret from me? What, you want Y/N all to yourself?” 

“Fuck off, Dean,” Sam scoffed, rolling his eyes at his brother. Of course that wasn’t the reason. Why would it be? 

“This is big news!” Dean shook Sam’s shoulder’s bracingly, slapping his chest with a grin. “Baby sister’s all grown up!” Dean made his way to the bed, grinning widely, and wrapped Y/N up in a hug, mussing up her hair as he bounced her in his embrace. 

“Dean, what the hell?” Y/N grunted, face mashed into Dean’s chest. 

“Well we’ve gotta celebrate,” Dean grunted, like it was obvious. “If you’re a big enough girl to watch our porn then you’re a big enough girl to star in it too. Fuck, Sammy, the fans are gonna love her.” 

Dean pulled roughly on the sheet Y/N was gripping against her chest, exposing her body to the brothers. Sam couldn’t tear his eyes from the way her breasts shook. His dick gave another twitch in his jeans, growing steadily harder the longer he stands watching her. Dean reached out a hand to grope her chest, tweaking a nipple, and Sam felt an unexpected surge of jealousy bubble in his stomach. He wanted those to be his hands. 

“Dean, what are you doing?” Sam asked this time. 

“You know,” Dean ignored Sam’s question, “I think we scrap that next series of videos we were gonna do. I’ve got a better idea,” he released Y/N and heaved himself off the bed, heading to the closet and pulling out their tripod. “Go get the camera, Sam.” 

Sam wasn’t sure he was on board with what was happening right now, did he really want his baby sister getting naked on the internet, showing her off to a load of old pervs? Sam’s dick chimed in at this point, throbbing so hard he felt the flesh pressing painfully into the zipper of his pants. He wanted that if he was the one fucking her on camera. If he was the one with his cock buried in her cunt, spreading her open for everyone to be jealous that they’d never get to touch what was his. Decision made firmly by his arousal, Sam grabbed the camera from behind the couch where they always left it to charge, and returned to the bedroom. 

Dean was fiddling with the tripod settings, and he gratefully took the camera when Sam handed it over, locking it into the top. Y/N was pulling on a pair of panties, her chest already covered by a black lacy bra that Sam knew was the one ‘nice’ one she owned. He watched her curiously, and Y/N smiled shyly when she noticed him. 

“Do I look okay?” she asked nervously, playing with her hair. Dean glanced behind him, giving her a once over, then nodded.

“Yeah, that’s hot.” 

Sam rolled his eyes, shaking his head. Dean had no fucking tact sometimes. He walked over to Y/N and grabbed her hand, stopping her fidgeting. He tucked the hair she’d been playing with behind her ear. 

“You look beautiful, baby girl,” Sam grinned, and his chest gave a little flutter of satisfaction when he saw Y/N flush and give him an embarrassed little smile in return. 

“I, um, I’m not sure about this,” Y/N gulped, her thoughts whirring. Everything had happened so quickly with Sam and then Dean walking in on her, and Dean telling her that she was going to film their next porn series with them. His tone hadn’t left much room for argument, so she’d pulled on her nicest underwear like he’d told her to. 

She knew it was wrong, technically; you weren’t supposed to have sex with your family members. But there was a lot wrong with her family. She didn’t have a mom, their dad had ditched them too, they’d never had a real home before, just this shitty trailer. And Sam and Dean sleeping together wasn’t hurting anyone else, plus it’s what kept food on the table too. She couldn’t exactly be angry about her brothers trying to take care of the little family they had left. But now they wanted her to do it, too, she wasn’t so sure. 

It wasn’t like she’d never thought about this before. Y/N had been secretly touching herself to her brothers’ porn channel for over a year, of course she’d imagined sleeping with them; imagined it was their hands on her body, making her feel good, instead of her own. She did want to know what that felt like, but she wasn’t sure she wanted other people to see it happening. 

Sam seemed to understand her hesitance, even without voicing it. He’d always been able to read her better than Dean. 

“It’s okay, Y/N,” he reassured her, squeezing his fingers around hers gently. Y/N looked around Sam to Dean, who was standing next to the camera, the little light now blinking to show he’d started recording. Sam had heard the small beep too, turning to look. “C’mere,” he pulled Y/N around the bed so they would be in frame, and stood so he wasn’t blocking her from view. 

Y/N looked to the side nervously, Dean grinning at them encouragingly, but Sam pulled her face around to look up at his. 

“Just look at me, baby girl,” He whispered, so the camera couldn’t hear. “Forget about the camera for a minute. S’just you and me.” 

Then Sam bent and kissed her, gently, and Y/N melted. It was so much better than she had imagined it would be. Sam’s lips were soft, and just a little wet, as they moulded themselves over hers. When she sighed, Sam poked his tongue out and ran it just barely along the seam of her lips. It sent a thrill down her spine into the pit of her stomach and she moaned, opening her mouth to Sam’s and pressing herself more firmly against his body. Sam wrapped her up in his arms, squeezing her against him as he plundered her mouth with his tongue, nibbling on her lower lip. 

A loud wolf whistle startled them apart, and Dean was laughing and clapping, climbing onto the bed to get into the camera frame too. 

“Fuck, she’s a natural,” he grinned, holding his hand out for Y/N to take and pulling her onto the bed with him, so they were both on their knees, facing each other. “Born for show business, this one.” 

Y/N glowed happily under Dean’s praise. 

“Where’d you learn to kiss like that, sweetheart?” Dean asked. Y/N gulped loudly, glancing sheepishly between her brothers. 

“Th–that was my first kiss,” she admitted nervously, hoping they wouldn’t be disappointed with her lack of experience. 

“Holy shit,” she heard Sam swear behind her, while Dean whistled again. 

“Fucking hell, you’re still fresh meat?” Dean reached out and ran a hand down her body, cupping his palm between her legs and squeezing. Y/N moaned a little, unable to stop from grinding herself against his hand, the pressure felt too good. “And fuckin’ slutty for someone who’s never been touched,” he laughed. 

Y/N felt her cheeks heat up in shame, but she still couldn’t help grinding against her brother. 

“Well, she is our sister,” Sam smirked, climbing on the bed and spinning Y/N into him so she was facing the camera, her back pressed against his chest. He ran his hands over her shoulders and down her chest, kneading her breasts in his hands. 

“Tell the nice people who you are,” Sam stage-whispered in her ear. 

“I–I’m Y/N,” she stuttered, helplessly grinding back into Sam. She could feel his hard-on against her ass. 

“Everyone, meet our baby sister,” Dean spoke towards the camera. “We figured now she’s eighteen, it’s time she started pullin’ her weight around here, helpin’ out in the family business.” 

“And if any of you out there are lucky enough to find yourselves a slutty little virgin, we’re gonna show you how to train them up,” Sam chimed in, rutting himself against Y/N. “You wanna be the perfect little fuck toy for your brothers, don’t you baby girl?” Sam cooed gently.  

Y/N nodded jerkily against Sam’s shoulder. She didn’t know why, but the way Sam was talking, and touching her, was turning her on so much. Sam had always been pretty submissive in the videos she watched, but that wasn’t how he was acting at all right now. Y/N looked at Dean, then back up at Sam. 

“What are you gonna teach me?”