Dex hadn't physically locked himself in his room, but he hadn't come out for several hours, except to bitch at Jax for the gawd-awful music she was listening to. He paced for some time, or lay on his back staring at the ceiling. Dresden was restless, which made Dex restless and his hand itched and he had punched several dents into the walls.
He noticed the music went off, and he wondered why. Was it possible Jax had finally given up on the dancing? He went to his door and listened, before he opened it.