So the fights off?

I see some people here talking about lawsuits and being arrested for assault and battery. That is true depending on the circumstances.

If two people mutually agree to fight or brawl, there is no risk of lawsuit. Legally they have each granted the other "privilege" and there would be no standing for a lawsuit. Not unless one or the other uses excessive force such as things like kicking the other in the face when they are down.

So, the fight can take place. As long as you both agree.