Dean would have accepted the denial if that was what Sam wanted, but he couldn't deny he was relieved to hear the permission. Especially when it was combined with the feeling of Sam's hand jerking him off at the same ruthless pace he was using to fuck him.

Seconds after Sam told him to come, his back arched up off the bed and he came loud and long, crying out his brother's name and clutching at the footboard desperately for something to hold. His legs were tight around Sam and his body tightened around his cock, wanting more of him. Deep. Hard. Everything he could get.