Stop being such a pussy. If he was in a long term relationship then I very much doubt he would even think about this. But the fact is he has, which must doubt in his own mind whether the relationship is worth risking or not. Edit: And who would ever think of suicide after a relationship?
I don't see what's wrong, technically she thinks he never did it, so win:win? Morally, yes, it is wrong. But f**k it, you're 'young and naive', it's not like you're going to get married. Man up.
Poon is poon at the end of the day, right? Rich J, how long have you been with her? I'd just f**k her then chuck her mate, she doesn't sound like she's worth the effort.