How to be sexy at a sleepover?

spend hours only with him. but then, just randomly get up and leave at a random time. ignore him for half an hour. then go and spend your time with him. and try to sleep next to him but in more of a "fall asleep" rather than "go to sleep" way. AND DON'T WEAR TOO MUCH MAKEUP!!!!!!!!!! thats is almost the number 1 thing fellas hate.