Wow this is wonderful...the same thing happend to me but i was the original girl not the one that he was sneaking around with and i would have loved 4 him to tell me that he wanted to be with somebody else because if he spend like 2 yrs cheatin on her he must have loved the gurl that he was cheating on her with...i don't think that u should give up because he is with you for a reason...give it some time...if u need to talk...e-mail me
love always
PRecIoSa