Dean groaned again, eyes closing as he struggled to focus on little things... Sam's breath on his skin, the heat of his brother's body... anything to keep his mind off of how hard he was and how badly he wanted to come. His cock was hard, trapped between his body and the bed. Holding back took a lot of effort, especially while Sam was making those sounds and fucking him hard. Not that he wanted him to stop. "Fuck, Sam. God... harder. Fuck me harder."