<human>: Condense the text into a few key points

I was in my first real relationship with my boyfriend for a year, and our fights about how some friends told him I had been flirty with a guy near the beginning of our relationship turned really nasty. He was borderline emotionally abusive and manipulative, and was also struggling with self-image and depression.

I decided it was best that we broke it off, and after I broke up with him, I went to that same guy friend's house as mentioned earlier, where they were having a project meeting. The other people left and while said guy friend was comforting me, he kissed me and told me he'd liked me for a long time. (said guy friend also had a girlfriend at this time....)

I was heartbroken and emotionally confused so I hung around with this guy friend even when he broke up with his girlfriend....bad decision. But after a week I realized that I still loved my boyfriend and wanted him back.

I told him a week after about what happened when I asked for him back, and he seemed heartbroken but ok with it and willing to still take me.

But now, 7 months later, he still can't get over it, and has been lapsing into hating me for what I did, calling me a slut, liar, etc. 

I understand his pain and I know what I did was wrong...but is this relationship really still a good idea?
<bot>: Kissed and hung around with another guy after breaking up with my boyfriend. We're back together and he can't get over it. Should we just let it go?