Okay so me and my bf have been together for about to be three years yet we’ve broken up and gotten back together and most of the times I’ve left him and I would speak to other ppl but never did nothing sexual with another man unless kissing is involved and he would always tell me I’m the love of his life and he really ment it but he was smoking weed, no school, no job and he was not doing anything for himself and it made it difficult for me the last time I broke up with him.  I started talking to a guy (just talking) and he was awesome but it never feels right with another guy to try to connect so I go back to this guy and we try working things out yet again and then I find out his friend had kissed him so I asked him straight to his face if he did anything more then just kiss a girl and (this was after having sex) and he told me he only talked and kissed two girls and I said oh okay I believe and trust you then a few weeks later I find out he had sex with that girl in the same bed that we had sex in and he didn’t use a condom and he blames it on me saying that it’s my fault cause I left him but I didn’t force him to have sex with her and I was hurt like a lot still to this day I can still have visual images of him having it with her but I’m trying to learn to love him the way he loves me because he says he’s only ever loved me and he was hurt by me leaving I just want to know what should I do should I keep trying cause right now it’s perfect and we have little arguments nothing we can’t fix  please help