You are on a school trip on a beach but you lost your group and you are only wearing a swimsuit and feel exposed

You are walking in the water when you see your enemy with his friends. One friend whistles and says Flirty "Nice ass!"

suddenly your enemy punches his friend "say that again or I will punch you" then he comes to you and wraps his jacket around you.

You ask "I thought you hate me?" He replies "that doesn't matter. I'm a gentleman and not a badass" and only looks in your eyes