Try talking to that girl, start a conversation and then if she talks back then your in. If she ask you to do something you do it, even if its buying candy or roses. Then you'll start to impress her, if you and this girl start to talk more ask her about her and her boyfreind and if she says were great then keep waiting if she says were good then try a little bit harder, and then if she says were ok then your in the clear. Keep talking to her but not a whole lot you dont wont her to think that your a really good freind but still talk to her and then one day if she ask you "so do you like anybody" your gonna say YES and then if she says who? your gonna say ITS YOU. Then just keep goin from there. GOOD LUCK!!!
Then she has to choose you or her boyfriend.
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?
Try an show her how cool you are compared to her boyfriend
If he is her boyfriend, hopefully, she would like him.
Wait till she doesn't have a boyfriend or move on
Treat her better than her boyfriend does.
You get beat up
Find a way to impress her.
It means that they like you more then they like there boyfriend
fight the other kid and take the girl
Move on, she's taken.
you make a girl jealous and the girl will hate her boyfriend and follow you as her boyfriend and listen to that song Justin bieber one time