speaking as a relatively frustrated dater for similar reasons, i will say that when i have what i consider a good date with someone, i will not hesitate to e-mail them the next day to say something along the lines of "had a good time last night, would like to see you again, you kiss nice...etc" embellished a bit of course.

when someone fails to e-mail me back in such situations, i get miffed. i have no helpful suggestions.