Dean growled, a low and gutteral vocalization. His eyes went dark. He pinned Cas to the wall, holding his hands together over his head. He rutted his hips against him for a moment, before dropping back, letting go of Cas completely, leaving him to peel himself away from the wall.
Dean stepped out of the room, disappeared into the bathroom. He kicked the door shut, but didn't push it to latch when it missed the mark. After a moment, he returned to the room where he'd left Cas. "I'm going for a run."