It had been a stormy night and Sam hadn't wanted to sleep alone. It might be funny to some people that a fourteen year old boy would want to sleep in the same bed as his brother while thunder and lightning raged outside. They might also think it's funny that someone that hunted monsters would be afraid of something like this. But Dean didn't judge. Instead he didn't even comment when Sam climbed in beside him. He simply glanced at the motel's clock – 11:06 - and shut his eyes. The next time he opened them it was 3:23 and he immediately discovered what had woken him
His little brother had rolled over, his lower body now against his right leg. He was whimpering as he gyrated his hips against his leg, his cock hardening against him. Dean bit his lower lip hard. Shit. He was having a sex dream.
The sounds Sam was making sent a shock through Dean. No, no, no. He tried to pull away but Sam's arm went around him, his fingers curling into the arm of his shirt. The younger's hips moved faster, a whimper and a moan escaping. Dean's body didn't register that this was his brother – his brain did, but it didn't communicate very well as his cock twitched and slowly began to harder. No. No, no, no. He tried hard to think of things to get it to soften up. Then Sam's lips parted and he nuzzled his face into Dean's neck.
He could feel the soft lips brushing the skin between where his ear and his jaw met and Dean couldn't help the complete and utter arousal that had now taking control of his body. It didn't take long until Sam was fully humping his leg, little whimpers falling from his mouth. Unable to help himself, Dean put his hand on himself over his boxers and he rubbed himself, eyes closing at the sensation as he let Sam continue his own motions. Sam's head slipped back again, falling from where it had laid and Dean's green eyes wandered over to Sam's face, watching as the boy's pleasure read across it.
Then all at once his eyes opened, pupils dilating. Dean froze his hand and stared at him, terror in his eyes. Sam gave a start and Dean could see the shock and almost fear. Disgusted with himself he went to pull away but hands reached out and yanked him back. "W-what are-" Dean started to question but before he could Sam slipped in between his brother's legs; the elder only had a second to yank his hand away. The grinding started again as the young shaggy haired boy began to rub his body up and down, his rock hard cock pressing through his pajama pants against Dean's cock bulging up from his boxers. Dean tried to make himself push Sam away, but the friction was too good. Want. Need. Want. Need. The words tore through his head as his arms circled Sam's body, pulling him tight.
"Oh fuck," Dean gasped into Sam's ear as he shoved up against him, meeting his movements. "Ohh…" he breathed out. Sam whimpered and rubbed faster and faster.
"Mm…oh…oh…" Little, desperate sounds escaped him as his face pressed into his brother's neck. Dean knew he was inexperienced so there was no way he'd last long so he let himself give into it. Might as well get off as well. He was so hard and impossibly turned on.
"Oh. Ohh yeah…oh!" Sam gasped and came. His body shook against Dean's body and his hips moved through the aftershocks. Dean shoved up and let himself release as well, moaning in a deep voice as his fingers curled into the back his brother's shirt.
Sam's face buried in Dean's neck and he pressed a gently kiss there before he rolled over and curled up in a ball beside him – their bodies no longer touching – and went back to sleep. Dean was left starting at the ceiling as the guilt rushed through him. He looked over at the back of his head as his brother slept. "I'm sorry," he whispered and stroked a hair through Sammy's hair. Self loathing and regret coursed through him. Oh god, he would never be able to forgive himself.