How to play hard to get with a girl?

I have a crush on this girl and i text her and i sit by her alot at school all i do is basically text her im addicted to her.. but no im not a stalker and i dont surrond her like a large bumb like you people will think i do but i dont... my question is how do i play hard to get? How do i make her jealous? we have been friends for 5 years going on 6 in 2 months we almost dated about 2 days ago but she changed her mind... so how do i play hard to get?How to play hard to get with a girl?
Only respond to a selected amount of her text, never text her first, don't ask her out anywhere. But when you see her in person, bat your eyes and charm the hell out of her.How to play hard to get with a girl?
Many people have their different ways but I can only give advice for what NOT to do. Do not hook up with a bunch of random girls in an attempt to make her jealous. Chances are, if she likes you, she will indeed get jealous, but she will also see you as a player with commitment phobia that just bounces around from woman to woman, definitely not a good label to have if you really want to be with someone..