I've read several posts here, but I agree w/what many are saying. I used to think that about my ex-boyfriend who was/is an alcoholic. I think he's had a girlfriend for maybe 1 month but nothing steady since I ending things with him nearly 3 years ago. His drinking has gotten worse so that is likely why he hasn't had too many "relationships" since then. However, it's normal to believe that someone else can do what you could not. The reality is that even if your ex looks happy with someone else, he's not likely going to change his ways. In fact, he probably has managed to convince himself that things will be different w/this new girlfriend (maybe he can fool her longer). That's just more denial. Until he gets into recovery, things won't be any better for him & they sure won't be good for his new woman. She's getting the same problems you had--she just hasn't figured that out yet.