Aquarius doesn't want me around if there are guys?

I have an Aquarius friend who is showing me a terrible side of her personality and I don't think I can handle it anymore. She makes me feel awkward when we're together with a guy or guys just having general conversiiton. She'll say things like 'You're so pretty' or some other random compliemtn and it makes me feel like she's threatened by me or feels insecure around me. This includes the looks she gives me as if she wishes I weren't there. She even told me before that she feels like I eclipse her when we're out. Honestly, she is the more talkative and friendly, lively conversationalist whereas I project the intense, calm one who gives the strong opinion or witty remark every now and then.
There was a man who I hooked up with (not sex) a week ago and after a week of her and I not talking, she tells me that she's gotten close with him and that he's really interesting. To be honest I felt taken aback??_ Today the three of us were talking and they bonded over something and I sat silent for twenty minutes before I just left, saying I had to study.
So the question is, why is she doing this? I thought Aquarians were supposed to be tranquil, coutreous friends. should I just slowly drift away from her? Part of me doesn't want to because when we are alone together she can be the funniest, friendliest person but around guys, it's horrible.

Um I am so confused..are you GAY?How did ya'll end up being friends?Maybe something you do annoys her & she's reacting off of that... who's knows.... leave "insecurity & "looks" bla bla bla out of it,because you will never know what she's up to.

hmm...werid...besides the whole zodiac personalities...

she seems to have a low eq and social intelligence.