Do girls get intimidated by cute or good looking guys?

I have a friend who no homo alot of girls says hes cute and hot but he has never had a girlfriend. From what i know hes mad quiet in class. He dresses gangsta maybe dats it but girls seem like they nervous around him. Some girls just stare at him but never say nothing or walk pass him n look ay him. So do girls not talk to him because they dont know him or because his appearance intimidates them?