I witnessed my girlfriend putting mayo on pizza and it is the most disgusting thing I have ever seen. I'm shocked.
Why did that bother you so much?
She's a huge moron. Eating anything with mayo on top of it is a stupid thing to do.
You definitely don't like mayo, but you shouldn't judge other people because they enjoy it. Let her enjoy her mayo, you don't have to eat it.
But it's so dumb. I'm thinking about breaking up with her because of it.
I feel like breaking up with your girlfriend because she put mayo on pizza is a bit extreme. You really shouldn't be so concerned about what she eats, because that's her choice. You have to let people like the things they like.