I have to say for me it is both. Though my fighting was not with girlfriends alone, it was directed towards everyone in my life. I was so use to chaos that I had to create it every chance I had once I was introduced to foster homes. I would not even have to be mad at anyone to start it. As early as 4th grade, I remember putting thumbtacks on the teachers chair and playing dumb when they sat on them. I was never caught for that one but it would have been one heck of a fight. By the time I was in high school, I stopped being physically aggressive towards everyone, almost. I found mental games to be more appealing, I know I did it out of anger and wanting to control. Many years and a lot of work, thank god I am not that jerk any more.