What if your crush has a boyfriend?

Making a Move. Treat her with respect. If you want the girl to like you, then you have to be respectful of her, and of the fact that she has a boyfriend. Dont make jokes about the boyfriend, be sleazy, always try to put your arm around her, or say demeaning things about the boyfriend or her relationship.

What to do when your crush likes you but has a boyfriend?

If you think it is possible that she likes you back, even though she has a boyfriend, you can ask her about it. Bring up to her that you are interested, but tell her you respect her and that she has a boyfriend. If she says she does not like you back, then give her space.