Hi drunksunflower. Seems a complicated situation… Not sure what to advise, but at the end of the day, you have to decide what you really want deep down. Do you see yourself with him in, say, 10 years time? Can he be, and remain, faithful to you through the years?

He does however seem somewhat inconsistent and disloyal (e.g. hating you for a year, then giving you a chance, having a gf!!!). I personally, would be (very) wary of that. I think you have to decide carefully, and talk it through with him, whether he can be trusted. If you find that you still want a relationship with him after all, then boundaries have to be set. He also needs to decide whether he can, and wants to, be with one partner on a long-term basis.

More importantly, don’t settle for second-best just because he has been there for you on occasion. Everyone deserves someone who is faithful and present to *one* (i.e. their own) partner 'until death do us part' basically.