<human>: I'll try to make this as simple as possible.
A girl I know tells me how she's been distant from her boyfriend because she caught him replying to those casual encounter ads on craigslist. Because of this, she's moved out, yet she still is with him (dating, sex and all that). I moved quite a distance away so I'm not there so often, but the last time I was there we made out for a real long time. We would have had sex if the house wasn't occupied. You may be asking why I did this in the first place. By the way she was constantly complaining about how shitty her relationship was, I assumed it was over, but there was no formal break up that happened.
After this, we were closer than before for about a month until I see something she wrote on her blog about this guy she met. I comment that what she had written sounded like she had a thing for the guy by the way she described him. She got offended over this (seriously, it was something you couldn't even get upset over), stops replying to me, deletes the blog link from her Facebook. I call her and leave a voicemail apologizing. Still nothing. I realize that I may have done wrong, but she may trying to get rid of me to hide the past. I deleted her from my Facebook (which she kept updating, so I know for sure I was being ignored) and I am now contemplating sending her boyfriend one of the many text message screenshots that I have from an anonymous Facebook account. Last contact with her was Sunday. Do I tell her boyfriend or try to make contact with her and resolve everything?

Can you provide a brief overview of the text?
<bot>: A friend of mine cheated on her boyfriend with me then became a huge bitch to me a while later. Do I tell her boyfriend?