you see your best friend bleeding has his enemy give him a punch. And kick him. You just watch crying. You say them to stop but they won't.

Nathan looks at you, so bruised but he didn't hit back because you made him promise he won't hurt anyone. Since he gets aggressive easily

then the enemy (Ben) looks at you & thinks "hmm.. I will stop hitting him. How about you give me a kiss and I will let him go. deal?

Nathan suddenly give other guy punch & glare at Ben "Don't you dare touch her"