A word of advice:
Don't get mad at your friends on things based on heresay, kids. You'll end up looking like an ass. Friendships fall apart because of this. If you care enough about your friends, talk it out.
We're not in high school anymore. Grow the fuck up.

[edit] btw, before someone thinks this has to do with me, it doesn't. it has to do with my juvenile friends. it's quite sad, is all.