I like to get with a guy I could give light punches to while fucking. If he was punching him like that it means they are tight. All the guys I've screwed with were more on the repressed side getting some dick so that wouldn't work. I used to choke my ex a bit though when I ate her pussy. I'd ask her to do the same getting blown. Little aggression while fucking is hot.
rough is one thing. the bottom clearly hated the punching, you could see it on his face when he turned around the first time. this top is just shit trying to distract the bottom from the fact he sucks at sex.