Here's one thing to do:
Tell him you want to play a game. Take him to your bedroom. Tell him to lay on the bed naked. The game ends if he touches you. He is NOT ALLOWED to touch you. Then you do a strip tease right over his head. You rub your body all over him, but lightly. Most of the time you just get really close. Put your pussy really close to his face but don't touch it to him. Once in awhile brush his penis. Do this for a long time and enjoy yourself. He'll be dying to touch simply because he's not allowed to do so. Finally after he's been teased for a long time let him take you.
There are many other things you can do too. This one should work once in awhile.