Background: 2 months ago. I was in a 4 year relationship with a girl, living together, sharing everything and on the road to marriage. She meets a guy and sleeps with him. Before I find out, she tries to dump me (a week after her encounter). I, still very much on tbp, beg to hold us together. She is very leery and but says we'll try. I find out about the guy. After interrogating her and weeks of uncovering evidence she admits to the encounter. I'm devastated. I want to hold us together but she says she's done.

Current situation: I'm still living with her. She is still seeing the guy but claims it's not her boyfriend... In fact when I mentioned that she left me for him she tells me every flaw I had in our relationship and says that's why she broke it off, not for him. I'm still hurting. I can't just leave, I have nobody in my city to help me (we just moved here 5 months ago). I have a job and was going to school until she dropped the bomb on me. Working on leaving. We're still friends but I'm still the schmuck that wants her back and she seems to enjoy my attention and the occasional sex, which I know is bad but I need it and there's no bringing girls back to our house.

I need direction. What do I do? I'm working on moving out but it's hard to leave everything behind. What's the best Red Pill approach one can do in my situation?