I have to agree with Pointy and Tiger
Once he wins you over, it will prove to him that he still has his way in the end. He will, in all likelihood, ramp up his efforts to control you so you don't try anything like standing up for yourself again.
From my own experience, before I was married to exH, we had a trivial argument about something really petty and he picked up my handbag and hurled it down the stairs of his flat. Just for the hell of it. I walked out and went to stay with a friend for a few days. I knew instinctively this was not right behaviour on his part.
How I wish I didn't let him wheedle his way round me over the 'phone. I gave in because I was a softer touch in those days. I also had nowhere to go - not even family. He was my first boyfriend and older than me. Lived to regret it as his behaviour did not get better. Oh yes, it did for a while, but then it got much, much worse leading to violence and intimidation.
When I did leave him for good, I got the patter about how he would seek counselling IF I came back. See - once again he was trying to impose his will on me. I told him it was too late for us, but he absolutely should do it for his next relationship. To my knowledge he never did and just has a string of broken relationships behind him.