Letting the World Know he is a Creep

So how do you get past wanting to shout to the world what a creep he is? There is a woman that he is working with on a community project. He parades her around and I'm sure he has slept with her. So what would she and the "community center" think about knowing that he is addicted to porn, is a liar, a cheat, and is not the nice man that they think he is.

I know….leave it alone, get out of the drama and work on me. But dang it….it's so frustrating to know that others don't have a clue what a worthless piece of shit he is.

Seriously….what helps in getting past the anger?