Why do I always hurt people?

When I go to sleep with someone, I always end up kicking them or punching them. I also snore (deviated septum) and toss and turn. Why do I do this? The only thing that I dreamt about was me falling in love with some guy at a U2 concert.. (there may have been a little walking or running involved, though). Apparently, I kick really hard :L How can I stop this? I also tried facing the wall but I ended up turning over :P Thanks!