You wouldn't be able to buy chocolates for her. What would you give her on Valentine's Day? And every time you took her to dinner, you'd have to make sure the restaurant had food with nothing but meat in it... Pizza places would be out. Same for Mexican because of the tortillas. Chinese, she wouldn't eat egg rolls, wontons, etc.

It would be really freaking annoying.

If you want to lose weight... just go work out or something.