It mean's, she trust's you more than she trust's her boyfriend, or because she is shy around her boyfriend and she doesn't know how he'll react.
she is a deciever
You should tell the other girl and both break up with your boyfriend.
Maybe a dress or a pair of earrings or something like that. (Guys should know that jewelry is the way to get on the highway to a girl's heart!)
Ask your boyfriend.
If he is her boyfriend, hopefully, she would like him.
no
If you are a girl then yes maybe. But if you are a guy you should not be married If she has another boyfriend
yes you should
* * *
A girl should be attracted to her boyfriend. Nothing 'happens' except that they love each other.
Does the girl know you like her? How long have you an and your boyfriend been together? And are you asking what should you do?