She probably doesn't want anything to happen between you two. If she already has a boyfriend she's taken and off the market. You either have to wait till something happens between them to cause a break up or just accept she has a boyfriend already.
kiss her and tell her how you feel but don't say anything bad about the guy she is dating
If u like a girl who already has a boyfriend but you dont know if she likes you or know,the first thing you have to do is that you will have to make friendship with that girl and if she is already your friend,then increase your friendship and one day confidently ask her that what does she feel about you..
There is nothing you can do if he has a girlfriend.Before making a move on him you should consider how you would feel if a girl did that to your boyfriend.
Ask the girl.
welltry and be friend with her and if you like her tell how you feel then if she breaks up with him there you go
If she is unusually happy or sad. She avoids outings quite often. She smirks when hugging and sighs when the boyfriend goes away.
Treat her better than her boyfriend does.
You can't.
If he is her boyfriend, hopefully, she would like him.
That's NOT Cool man.
Tell you her your feelings about her
just by being your self