F*cking men.... tell me what u would do ladies...

so I caught my significant other at the time talking with other women on Plenty of Fish while living under my roof we were what he says "broken up" yet still living under my roof let me remind u he moved up north to be with me I told him he had an hour to pack his things when I came home from work his response was "we were broken up" no I left to go with a g.f to go pick up her two children from her baby daddies house he thought I was out messing around with one of our friends (not the case) he said he was bord so he went on there to talk to these women well he never told me that he had talked to these women the next day or ever brought it up I had to steal his phone to find out for myself I had a huge gut feeling and I was right..... so he is now living back down state but wants us to still work things out am I f*cking crazy to go back to this?! I love this man but I think he could be a narcissist 100% please HELP!