Yea, it really has nothing to do with weither or not you know karate. I mean, sure it would be great to defend your girl because shes hot and all the guys want her(kinda like in my case) but yea, it depends on the girl. In high school I was this "cute" kid that the girls defended me if my friends picked on me. I even had a body guard that was a girl, and if a friend of mine hit me, she would hit them. But now I tell them that im in MA and there like "thats cool", and thats about it.