I don't know quite how old you are, but soon as I read your topic I knew the guy who said it was young. I'm guessing this boy is 15 or 16 isn't he?
It sounds just like something I would have said to girls when I was a kid. He was just trying to be clever and tease you. He just isn't old enough or experienced enough to know how to tease in a way that's fun instead of insulting.
Wow. That guy is way too easy to make fun of. First that was a grammar fail right there. So he ain't very smart either. Next time you see him correct his grammar and tell him 'You look smarter than you are'.