I know what he means when he says the part you don't get!

3:00 must be after school hours and oyu are on the computer at school, he probly saw you and *wished* he was there with you.

Tell him ok and let him take you out somehwere, see if you like his style, the way he acts around you, your friends, his friends, etc.

You will be able to tell if its real chemistry or not. Its your own opinion what do you think?