Well u try to become friends with her and then u just look @ all the sighs that she likes u and if that doesn't work the just ask her...
if i where you i would tell the girl that likes that boy that he has a girlfriend.that is what i would do.
She already said she likes you.
Tell her to bag up of your man
Then she has to choose you or her boyfriend.
Tell her how you feel about that. If she really likes, ask her why she doesn't want a boyfriend but don't be to pushy as it could be a personal matter. Tell her when she's ready you'll be there waiting for her. Good luck!
you could catch her staring at you or smile at you often
Just tell ask him if something is going on between them and see where it goes from there
I would confront the girl or warn your boyfriend
tell him to chose who he likes best or if you want a man who likes only you then say go chase after that hoe you like.
Wait for her to decide if she likes you or her boyfriend she is obviosly feeling conflicted between her feelings for you and ger boyfriend, it is important that you do not pressure her into deciding tell her you understand what shes feeling and that what ever choice she makes is ment to be.
just tell him that you have a boyfriend or you could discuss it with your boyfriend and tell him to tell his friend...
You should just ask her.