Wow...what a jerk. This guy reached a whole new level of being an ass. He cheated on you the day before the wedding? Why the fuck did he wanted to marry you in the first place? Ugh, he's such a pathetic loser.
OP, I feel sorry for you, I really do. The only positive thing is that you discovered it and therefore never married that ass. Imagine that you found out about it in your honeymoon...But shit, it's still a fucked-up situation. You lost your future husband, much money, many dreams, you have to explain this to your family, and so on and so on.