from experience i can say this works, girls: so say ur about to go to class or sumthin, go up to him and whisper in his ear, but mummble so he doesn't hear wut ur saying(ur dont even have to "say" nething) then start walking away. when he says "what" or "what did u say?" or nethin like that, u keep walking but look back raise one eyebrow and flash a small smile. it will make him wonder and want more.(it will also give him an "excuse" to talk 2 u again((but thats only if u aren't his girlfriend)))