Should I Go?

Friend: I was invited by a friend to his wedding. Should I go?
Me: Why not?
Friend: I don't like his way of inviting me. It seems improper. Should I go or not?
Me: How improper?
Friend: It's just simply a broadcast in BBM. I'm wondering if he really wants to invite me
Me: Hmmm...
Friend: Go or not? Go or not? Go or not?
Me: Well, it depends on...
Friend: I decided not going!
Me: Errr...