What would you do in this situation
This guy that works with one of my friends literally hit her. He thinks he is the shit and she wouldn't go out with him and he sunk to the level of punching her. She has a bruise on her shoulder the size of a baseball. I went and got in this kids face and we got almost got into it before some people broke it up. Now he is running his mouth saying he is going to mess me up and this other shit and I'm literally thinking of going through with this fight. Everyone says its wrong and be the bigger man but I feel this is an exception. I'm not cocky but I'm confident I have better stand up and ground fighting than he does. Some people are telling me to really break his face and others are trying to get me to just not do anything at all. I am very torn about this because I feel like this guy deserves to get rocked. I need advice