((Warning: Features underage sexuality (Mid-teens). There is no actual sexual contact between said underage people, but there is ample mutual masturbation and the watching of lesbian porn. You have been warned.))

Dean likes to pretend that he hasn't been in love with Sam for as long as he has. It's a self-preservation thing; a way to convince himself that he didn't permanently damage Sam's psyche when they were growing up.

But the truth of the matter is, they've been five steps away from normal brothers for a really long time. For starters, they slept in the same bed for far longer than most people would deem socially acceptable. Their life on the road occasionally had something to do with that, but when given the option of two separate beds and their dad the next room over, they still chose to share for most of their childhood.

It just felt safe, felt like home, when they would share a mattress. To this very day, Dean will always get a better sleep, feel more rested and peaceful, when Sam is sleeping with him.

Even when that stopped, when Dean was 14 and realized that other people just didn't do that, it didn't change the fact that they were more intimate than any brothers should be.

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And maybe Dean encouraged that, a little. But Sam was his everything; his only friend, his only sibling, his only playmate, his only confidant. It didn't seem weird, at the time, to share everything with Sam, even the really nitty-gritty stuff.

It's not like Sam didn't know what was going on. The kid was always whip-smart and inquisitive, it didn't take him long to figure out exactly what pay-per-view was all about, and why people watched it.

It just became another thing that they did together; another check box in their shared life, their shared routine.

Dean liked it, he looked forward to it. Which should have been a red flag, but he was young and stupid and horny. So picking out a porno with your baby brother and getting off together; totally fine by his teenage standards. They were going to be racking up the pay-per-view bill anyway, might as well both enjoy it and get the most bang for their buck.

"That one," Sam said decisively, and Dean chortled, but selected it anyway.

"I'm noticing a pattern, here, Sammy," Dean smirked as the video started, "Getting a bit of a thing for lesbians, huh?"

"Shut up, jerk," Sam snorted, "Don't see you complaining."

Dean wasn't, not by a long shot, but it was fun to rile Sam up sometimes.

"Just sayin', Sammy, careful it doesn't turn into a fetish. Not being able to get your rocks off without mouth-breathing over lesbians would be a tough gig."

Sam threw his extra pillow at him.

"Just shut up and watch the fucking movie, Dean."

Dean cackled, but finally shut up. It was a typical porno; bad dialogue, worse acting, stupid plot and cheap sets. But the girls were pretty and it didn't take them long to get to the good stuff.

Dean rubbed his cock through his boxers, just teasing himself, amping up for when things got really good. Out of the corner of his eye, he could see Sam doing to the same; just rubbing his thumb over the head of his cock, tiny shivers passing through his little brother with each stroke.

"Yeah, fuck, baby, lick me good," one of the girls moaned, exaggerated and loud, but Dean ignored it in favor of watching the brunette on the screen do as she was told, getting to her knees on the floor beside the sofa and pressing her face into the blonde's pink pussy.

A little moan from Sam, and Dean had to agree. The brunette was enthusiastic, to say the least, and it wasn't long before Dean lost the will to keep his hands outside of his boxers.

With a moan of his own he got his dick out, stroking firm but slow from base to tip. Dean wasn't the type to rush; he much preferred a long, hard orgasm over a fast but fleeting one. Too many of those in crap, weak-water pressure showers, thank you very much. If he was watching porn, he wanted it to be good.

The blonde was really into it now, and Dean knew at least half the noise she was making was exaggerated and over the top, but if the flush on her chest and neck were anything to go by, at least she was actually enjoying it. He liked to see that in porn; it bored him to death when the actors would focus more on trying to look sexy than actually enjoying and participating in what was going on.

Apparently it was working for Sam too; Dean could hear the quick stokes from Sam's bed, his brother's soft panting and the quick snick of precome being smeared down Sam's shaft with every stroke. That was a shared trait, Dean had discovered. Get them turned on and their cocks drooled precome like a leaky faucet.

"Shit, yeah!" the blonde cried out as the brunette pulled a dildo from somewhere, sliding it in and fucking her with it like a machine, her tongue still licking obscene and wet on her clit.

Dean's hand sped up of its own accord, and even he was breathing quick now, precome oozing out his slit and running hot and and slick down his shaft; smeared around by his stroking hand.

"Fuck," Sam panted, and Dean couldn't help but look over, Sam's hand a blur on his dick and his brother arching as he started to come.

Every intention Dean had of holding on a bit longer went out the window at the sight of it, and completely against his will he came, watching Sam instead of the screen.

"Shit," Dean panted, wringing the last spurts of cum from his cock and finally letting his eyes close.

"Yeah," Sam agreed, and Dean opened his eyes again. Sam was looking at him now with heavy-lidded eyes and flushed, sweat-shiny skin.

"Wanna keep going?" Sam asked with a grin, "There's still 45 minutes left. Think you can get it up again, old man?"

Dean returned the grin, looking back to the screen, where the two women where now 69-ing.

"You're on, babyface."