Wy do Justin Bieber fans say that all of his haters a jealous of him?

I mean if you say something bad about Justin Bieber there all like: Oh you're just jealous because you don't get all the girls drooling over you and cause he's famous, hot bla bla... They really sound stupid. I mean I'm a girl and I don't like that guy and trust me, Im not jealous of girls drooling over him.