My girlfriend thinks she's hotter then she is... She puts down hotter Girls?

Anonymous
First of all she gives off this attitude like all guys like her and tells me regularly how guys hit on her. This may be true when I'm not around but it seems she doesn't get attention when I am around which makes me think she's lying. Anyway she always compliments herself in a backhanded way. Like she would say how her boobs get in the way or how guys perve on her ass making it sound like a burden.
When we are talking about a girl she always mentions how they aren't that good looking when clearly they are and she claims to hate girls who wear tons of make up when she kinda doe as well.
I don't get why she does this. I don't even bother complimenting her now because she does it herself. She has regular bitch fights with her 'freinds' about petty things which somehow she informs me about.
I'm just confused isn't this meant to be what 14yr old girls do not 19yr olds. I'm kinda not liking her now and make excuses to not hang out. Will she grow out of this?
My girlfriend thinks she's hotter then she is... She puts down hotter Girls?
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