Me and a few others plan on starting rumors on him for revenge.
I hope you are not serious. Why would you do that?
We do not like him anymore and need to get back at him for what he did.
Gossip and rumors can destroy a person's self-confidence and affect their self-esteem. You should instead talk to a councilor about your friend and try to get them help that way.
Look, I just want revenge.
It is so mean to lie about someone else. How would you feel if you were in their shoes? Someone lied about one thing and you could never live it down, that's just not right.