Need device

Ok so I fell in love with this guy when I was 21 and he was 33. 7 years later he's constantly getting physical with me and me being who I am, I don't let no man hit me, so I fight back. This only happens most when we're drinking. I love him to death but idk how to get out and not miss him and come back to him when he wants and asks me to. How do i get out? FYI we was trying have a baby and he said if I did everything would change. He says I'm the one for him.