Why does this girl act shy around me

shell act competely normal to any other guy and hug them but whenever I'm around shell stare at me for a long time or just a couple seconds 2 days ago me and my friend were going 2 see his friends and she was there I don't know if she was talking 2 the girls but as soon as she seen me she left lately she also stands by the front highschool doors with her friends guys and girls.most of my friends said that she has asked them out herself she also stops talking when I'm around she is very good looking but I just don't know why she acts different around me anyways she's been doing this for about 2 months now and I'm wondering if she likes me or just wants 2 go out with me becuase my friends said no so I don't talk 2 her because I feel that I'm last on her list you know what I mean. and if I make her feel uncomfortable that would suck because she always looks at me when I walk by or when I am standing with my friends but when I stop like 2 feet away from her shell leave.
Why does this girl act shy around me
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