Don't think I could ever stay with someone after they cheated, been in that situation before and ended it straight away, as soon as I found out his stuff was outside before he even got home from work and had a chance to try and talk himself out of it. The only reason I say I'm not 100% if that would always be the case is because it might be different if I had kids with them or we were married,I haven't been in that situation to know,saying that I still reckon that would be relationship done, I just can't see a way back from something like that