I don't want to be friends with someone anymore over a concert ticket.
Was there something that happened between you two?
Because they're an idiot.
if you call them your friend you shouldn't end your  friendship over some stupid thing as a concert ticket. You should learn to ignore small things about your friends.
You are right but I'm mad at this point.
It is okay to be mad about something, but you shouldn't let a concert ticket get in the way of a friendship. I think you should let your friend know how you feel about it. Your friend won't know how you feel if you keep it from them.