You can try to get to know her as a friend first then when she stops dating the one guy if this is high school it doesn't usually last so then if you know her well enough when she stops dating you can try to ask her out then. Any more questions message me.
Ask other people to ask that girl if she has a boyfriend. Just remind them not to mention that you wanted to know.
You move on - this girl has made it very plain that she's not interested in dating you.
It would be a wise decision not to "hit on" her at all since she already has a boyfriend. A better choice would be to find a girl who does not have a boyfriend and ask her out on a date.
Well if you guys are friends (You and the girl.) ask her if you could dance as friends and make sure to make that clear to her boyfriend. Just ask her. It's only a dance. Just keep away from the slow stuff.
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..
Ask her. Or ask around among others who might know. The first idea is more direct.
Well, if you see her holding hands or kissing another guy, assume that's her boyfriend. But if you don't see that, just ask her. =]
Ask the girl.
Ask her friends in a subtle kind of way. Don't stalk her or follow her around! If you're brave, ask her yourself!
ask her or get somone to ask her
Treat her better than her boyfriend does.
You don't. >_>;;;