Well, the marriage vow is "To have and to hold, for better or worse, through sickness and health". I see nothing, not one damned thing about dumping FOR ANY REASON, yes not even infidelity. Though personally I think many cheaters are scum, and I have lost respect for one member of my family that cheated on her husband...with his best freind, I do think there should be a caveat about cheating in those vows, but presently there is none.
But then again, this day and age those vows aren't worth the paper they are written on.
