Most Helpful Guy
I think text him at least once and if he says he is angry than it keep silent. Well, if you can meet in person that is even better. Personal touch has more effect than online interaction for me at least.
Most Helpful Girl
definitely wait for him to text you. If he was really nasty why should you be the one to bow down and apologise? If you hope to have a future relationship with this guy he needs to know that it's not ok to call you nasty names, fight or not. Don't give in. If he never texts you then you need to move on because he's not worth it. Find someone else who will appreciate you.