How do you make a girl break up with her old boyfriend then like you?

i wouldn't even try cause you are just going to make the girl not like you at all. Uh...You don't, DUH. She's with another boy, because she doesn't like you! If she did she would be with you, and you can't force someone to like you. It's not gonna happen, get over her. dnt slag him off to her! hang out with her. txt her if she likes you, she likes you..