I'm gay and my boyfriend is scared of me?

I just showed my true violent self to my boyfriend and now he says he is scared of me. I apologized to him and he won't even talk to me. I didn't mean for him to see me get angry and yell and threaten bodily harm to him. Is there any way I can redeem myself? Am I really a loser who doesn't deserve anyone? What can I do to win him back?