Most Helpful Guy
So learn your lesson and don't hit a man. He never raised his hand to you before and only did it because YOU hit him TWICE. You clearly only did that because you thought he wouldn't retaliate physically and you could use your gender to get away with domestic abuse because "men shouldn't hit women but women can hit men."
Arguing is inevitable in a relationship but if your response is to hit somebody who is yelling at you, you need to seek anger management classes. If you think about hitting him again in the near future, you'll remember this incident and think twice before doing it.
Most Helpful Girl
If you two are already hitting each other, then that is a clear sign for you two to break up. You should not be with somebody you want to commit violence to. You hit him first, you can't expect anybody to not want to hit you back. But you two should not be with each other. What you two have is dysfunctional.