"Second date"
If you've made it past your first date, you should be relieved. The most uncertain phase is over and the detective work begins for real. Think about the first date went. Was there a lot of warm flirting, or lusty glances and arm-touching? Or did she spend a lot of time avoiding eye contact, adjusting the napkin in her lap or studying paintings on the far wall of the restaurant.
Did you find lots in common to talk about? Or were you struggling to fill the silence and praying your waiter would come over and make small talk about the bread? Did she leave you with the impression that she wanted to see you again, or were you pretty sure she'd rather get her wisdom teeth pulled than see you again?
If you think the date went well enough that you have a chance at a second date, wait a full 48 hours and then call her. If you call her immediately, she might take it as a sign that you're desperate, over-eager and probably unwanted by the rest of humanity. (And you may be.)
Instead, you've got Things to Do. That's right. Your social calendar is FULL and you have to wait a couple of days before you even have time to pick up your phone. But when you do call, let it out - make sure she knows what a great time you had.
Use this second-date phone call to continue your detective work. Does she sound happy to hear from you? Does she sound completely apathetic or does she start going on and on about what a great time she had, too? If you get her voicemail, leave her a message but don't ask her out in the actual message. That would leave her with a lot of time to perfectly craft a response, which will make your phone call less useful for investigative purposes.
If she's willing to go out with you again, now's the time to really get to know each other as human beings and not awkward first-date robots. Pick an activity where you can be yourself. Now is the time to mix it up.
If you went out on the town last time, try a night of sitting around eating huge slices of pizza and people-watching under the stars. Or if you slummed it at the local bar, take her to a place where she won't get beer sloshed on her this time.
Show her that you're a well-rounded individual with lots of interests and she, if she's lucky, might just become one of those interests.
