I'm an awfully loyal friend. Once I've started a relationship with someone, it's like they are syrup and I'm a pancake. Their syrup gets into my pancake, so to speak.
I think with any sort of rejection, you're angry that you weren't enough for that person.
I wondered a little why God was such a useless thing. It seemed a waste of time to have him. After that he became less and less, until he was... nothingness.