Why Do Guys Make Fun Of Girls?
Boys usually make fun of girls when they are not sure of themselves. They do not know how to approach a girl to form a relationship with a girl so they must make fun. They have not reached the age to appreciate girls as the beautiful, intelligent, and resourceful people that they are. Give them a little more time and the girls will be all they can think about and then the real fun will began. Take care.
They guy probably likes the girl. And teasing them is there way of showing the girl he has feelings for him. I don't know why they can't just tell her straight up.