Found out my fiance cheated on me 3 weeks before our wedding. From what i hear The girl he cheated with he has been trying to smash years now which makes me believe it may be more than just screwing her. A part of me believes he had every intention of continuing the affair with her once we were married. I don't understand why men do this? Why risk it all.. he's already sewed his wild oats before this and he has changed so why now? Please help me understand guys?