I'm going to freeze out a friend
Why do you want to freeze out your friend? It sounds like something serious has happened.
My friend RSVPed to my wedding, and then did not show up
It's fine to be upset when people back out on commitments. As long as your friend did not have a good reason for backing out, being mad is ok.
Shit. I don't care.
It sounds like you have mixed emotions and that is okay also. you do not have to confront the situation.