I am so mad at a guy who hurt me really badly.He did this without knowning my side of the story. I keep thinking of things to get back at him. I know this would be wrong. What
Can I do to control my anger and not anything to him... Any ideas..

We will need more facts. What did he do exactly? Why are you so angry?

I think you should do nothing until your anger has subsided, then maybe you won't have to regret your words, or actions, and have to pay the consequences of any bad behavior.

This is a great place to vent, if you care to. I think that would be a good first step in controlling your anger.