Search Results: hug in private

There is a girl who is my close friend.
She likes me. She has a boyfriend. ( Boyfriend isn't a big thing for me) because she isn't cheating. So lets just leave and forget it about the BF.
She is not a bitch, She isn't a Slut, She is really a GOOD GIRL, I know well but I can't understand her, She is not cheating but why does she behaves like that.

Lets focus on this. Her normal habits are of showing affections to anyone even her friends is the same, but to me, there is something that makes feel curious

We usually hang out alone in school/public/office or anywhere which is public seting, but she dont usually tend to show affection with me like (hugging, leaning, linking arms). She gets less clingy, uncomfortable to flirt and be intimate.

BUT

Why when we spend time alone in private setting she does shows affection with me like (hugging, leaning, linking arms) and she enjoys my company and flirts and tend to be intimate too.

Answer this question only on the poll given.
1.Does she avoids others because she feels its personal she doesn't want to share it all how she feels about me?
2.Is she afraid because others might get a wrong idea and she is also afraid of her own actions that would mislead everyone's perception when she doesn't actually love me?