I asked a friend I'd had for a very long time to be in my wedding. She agreed and then completely disappeared from my life.
I'm sorry that's rough.  Did you ever find out why?
No, I didn't. I even offered to pay for everything for her since she had to travel. I guess she wasn't as good of a friend as I thought.
I guess not, but I hope you still had (or will have if it hasn't happened yet) a great wedding!