Unfortunately, it is not possible to make someone be interested in you. However, you can be nice and courteous to him/her and then they may become interested in you.
You can choose to try to make him interested or move on to a man who is interested. It may mean that the boy you like is interested in someone else.
make friends with someone you like then show that them you are really interested in them.
Tell her! ignoring her would make her want you more.. or get someone else to tell her
You don't. You ask them if they are interested and if not, let it go. You can't make someone do anything.
Unfortunately if this person is not interested and has told you that they are not interested then they won't get jealous besides its not worth the time trying to make someone jealous or playing petty games. Move on they are not worth it - choose someone that likes you for you.
There is not much you can do as they are interested in someone else and not you. Focus your interest elsewhere to someone that is interested in you and deserves your attention.
ignore the person and make him or her think you are not interested in that stuff
Just say, "thanks, but I'm not interested".
They are interested (most likely) ... Or trying to make someone jealous.
Just tell them, in a gentle but clear way, that you are not interested.
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