How can i be a challenge to this guy i like-guys, what drives you crazy in a good way??

I only ask this because i know he wants me to be more exciting and mysterious. i've got the y thing down haha, but im too available because i like him so much, and when we make plans, i get all caught up in the excitement and am very agreeable and available. we're on again off again because we like each other, but i like him so much, he has me eating out of his palm. i need to be cooler, how do i help his affection for me along? oh and dont think that this is just me manipulating him and playing with a guys feelings, because he has been playing this game on me , and and he wants me to play back, hes even said its ok to manipulate him a little, and another time he laughed and said, "youre so available" BIG CLUE. haha. lately ive been less available because of my art cles, so that revved him up a little. and hes defintely attracted to me, and im an aggressive girl in life and in the sheets, i just need to know how to intrigue him more.