Relationships

So, I am stuck in a relationship with an attorney. Who makes every weekend a nightmare. He's emotionally abusive and sometimes physically. He spends most of his time at bars. Knows every bartender and waitress from Bethesda, Rockville, Potomac. Acts like it's a good thing to be known at bars. I know all of this is a serious red flag. But he has said, if anyone challenges him, he will light them up. Because of his aggressiveness, I believe that. BTW, that behavior came way after the fact. Now I am just stuck with this monster. I have never been in a relationship like this. He just starts fights and arguments out of no where. It's like walking around on egg shells. I'm so drained emotionally from this. Personally, before him, I have always been a very optimistic, positive, out going person. But I know feel like my bright light has been dimmed. Has anyone had to deal with this kind of person? And how did you start over with very little resources?