He probably likes you. He just doesn't want to show it.
When your crush acts mean it means that he likes you but he doesn't want to show it.
Tell him ''Be nice or I'm done with you!''
Be nice to the girls...don't be mean to them,tell her you love her alot if you have a crush on her,tell her nice stuff,do anything she tells you to do
Sometimes, you shouldn't look past what they say. Most of the time, it has no hidden meaning. When your crush tells you that you're nice, they really mean that you, as a person, are nice. Or, you could look past that, and see if there's a second meaning. He/she may like you.
If your undercover crush told you that he would date you if he didn't have a girlfriend, he is being nice and letting you know that he is taken but if he wasn't, you are nice enough for him to date.
Grind
His nice way to move on from you yet still has feelings for you.
give her gifts but not to many
cut
If your crush gives you less attention it could mean that he or she does not like you as much as you'd like for him or her to.If your crush is giving you less attention, they may not be crushing as hard as they used to be.
First of all, don't be mean to her, or she won't like you. Be friendly to her and funny and nice. Treat her like a friend.