He's trying to play hard to get with me, how do i make him jealous and want me like never before?

Alright well making him jealous may not be the route to go...it could all just end up blowing up in your face! and then there is no you and this dude. What you should do is basically make sure u look your best at all times and be the sweetest and nicest girl at the party. Dont say anything mean about anybody. Be an angel and compliment everyone. SPECIALLY HIM! Trust me the only thing he'll be thinking about is you!