My boyfriend has anger issues and often loses control of his temper. He always is yelling about something that made him angry. I can deal with that, and even get him to calm down everytime. The thing that worries me is he hits his mother when she makes him angry enough. I'm worried that if one day we get in an argument, he'll hit me. I don't think he will mean to hit me, but he will do it because he is so used to hitting the person that makes him upset. Should I leave him to keep myself safe?