I'm a loner, could it be because I'm an Aquarius?

I don't talk at all in class and girls keep glancing at me as if I'm a weirdo for being so quiet. When I look at them, they smirk, but when I try approaching them, they get all scare( they would do that mmmmmmm! sound and wouldn't look at me as if they don't want to be bother) like I'm a serial killer or something. Man, this stink, all I do in class now is just do my work and when class end, I'm outta there.