What should I do????? I just met him...?

ok so, I just met this guy on myspace and we were talking for about 25-30 mins, everything went fine until i asked him if he comes up to my town ever... and if he was really 20 - he didnt reply!!! and I havent talked to him since last night... Should I IM him first or wait until he IMS me or just leave him alone.... HELP !! PLEASE