By giving her an extremely good reason to go out with you instead.
Just be yourself.If he doesnt like it leave him. : D
leave her and carry on. find some other girl and if she doesn't like you then ya know
If she has a boyfriend, leave her alone.
Just tell her you like her, if she likes you she will leave him, its happend to me before mate.
Why is he still your boyfriend? If you don't like what he is doing, leave him. Life is too short to put up with nonsense.
Don't be a knob. Be respectful and dignified. act like a man, treat her like a woman, leave with dignity.
He should leave them alone ! Their relationship is none of his business !
Probably not the answer you want to hear but - leave them alone ! As you said, she's already in a relationship, and it's not your place to interfere.
then she should leave her boyfriend and do something about the love she has for her best friend..
It may be hard to do, but always talk to her... if she doesn't like you or doesn't feel right about the situation leave her alone and find someone better:D
The song is about a young girl that tells her boyfriend to "leave the pieces when you go." after they breakup.
Then she has to choose you or her boyfriend.