Serves him right. These stupid bastards that insist on gimmick marriage proposals in front of thousands of fans who just wanna get on with the game should heed the lesson provided here ... there's always a chance she could say no so propose in private dumb ass!
I think that would be embarassing for both of them. It is one thing to agree to take part in a contest but then to find your man is the one in the outfit and then the proposal. It most likely just floored her as well. It is not exactly the most romantic way of doing it either.