Why does she act so outgoing around other guys except me?

[clueless_one]

This girl used to always talk to me like she does to all regular guys. But all of a sudden she stopped. I only talk to her, she replies but never keeps the conversation going and rarely gives eye contact. To other guys, she keeps the conversation going and gives proper eye contact and also has a more outgoing attitude (even when I'm around).

All she does is looks/glances at me from the corner of her eye. Never asks me questions, only on rare occasions like she asked me once if I had eaten something. She also stretches her legs or arms towards me and has her torso facing me. I have never noticed her do this to any other guys.

She's also smiled at me (trying to hide her face) when I looked at her with a smile. When I was upset about something and talking to a good guy friend of mine about it, she gave quick looks at me with a concerned/worried look on her face. One time, her good friend said my name when saying hi (which was fine, but I never introduced myself to her friend). Her good friend also gave me glances when talking to this girl and also both of them looked at me smiling when I walked passed.

So, why is she acting different to me but outgoing to other guys?

[LoveLessOne]

she has a crush on you. pure and simple. she is shy because she is ,i guess you can say stutter struck, where she cant seem to be her normal self since she is all flushed

[ZzeWatermelon]

I think that she is really insecure, and doesn't know what she truly feels. I wouldn't call it a crush though, so don't imagine anything. You have all your chances though, try to talk with her. Go and see a movie together or something, if she's into you, she'll say yes. (She doesn't seem a shy person to me)

[highschool]

I would agree that she might have a crush on you and is shy. The most outgoing people can be shy around the one they like.