I was in the same kind of situation nothing as severe where I needed spine surgery, but I know how it is because you love him. Mine was kind of an emotional abuse which was pretty bad. He says he changed pshh I was on and off with my ex thinking he was going to change and honestly a few times i didnt want to go back to him, but I did because i was scared of him and it was like i had to because of it.He never changed it would be fake nice at first, but after a while the true colors started to show. He took full advantage of me. Get out of it the longer you are with him the more it will just get worse. Go to a public place like a restaurant to break up with him and bring a friend.Just think.... he was pretty nice when you started dating him right like begining of relationship before any break ups...how else would you fall for him... you wouldn't have if he wasn't nice when you started dating him.Then he got mean...it's the same thing again on repeat. Don't let him hurt you anymore. Get out of it i know you love him.... but if he loved you would he put you through this? Trust me after a while of being rid of him you will feel so much better. There is a book called the breakable vow....after you break up with him you should read it.