[ Christ on a cracker. Steve stops, dragging a hand down and fisting it in Rumlow's hair with a furious look on his face. He doesn't bother hiding it, doesn't bother softening the jerk on Rumlow's already mussed hair. ]

You don't get it. That isn't how this is supposed to be. We don't hurt each other and try to one up each other worse and worse just because it's fun.

[ That's the biggest difference between them, perhaps. Rumlow finds all of this fun, and it turns Steve's stomach. He's not sure why this sort of thing is so different than the roughness and force during sex, but it is. ]