It may be that you have not looked. Now I have the opportunity to make his life a living hell, because I have just been made his boss at work. I think in the end this will not make me feel any better, but I have not been able to discipline myself sufficiently to refrain from my little acts of revenge. Talk me down, if you would. I want to know how to move on.
Willed evil is rare, perhaps even rarer than good deeds.
The boy is not worth your time, nor is he satan incarnate. Sometimes,we simply can't see what effects our actions will create. This does not mean that there is no responsibility to do good. You do not need to remain this man's friend. Forgiveness is the exact opposite of vengeance.