Does anyone have any stories about how their guy DID change for the better? I’m trying really hard to forgive my guy and move past it, but I just don’t know if he’ll get better or not. So... any “success” stories?

*back story - when my guy is sober we have the BEST relationship ever, he’s the most amazing guy I know, but when he drinks he gets angry and last month it got to the point where he had me pinned down in bed and was biting and pinching me all over and yelling the most hurtful things. The next day I packed my shit and left, but now he’s stopped drinking (it’s only been a month so we’ll see) and we’re going to separate counseling and couples counseling. I love this man and I want to give him another chance but I just don’t know if he’ll really change.