Sorry she bailed on you but it happens! Try not to take it personally. I talked to hundreds of women, went on dozens of dates, and had multiple dates with probably a dozen women before finally settling on my GF. It's a game of numbers for sure and you've got to handle it with emotional detachment. Don't let your heart get carried away until you've been on several dates (EDIT- with the same woman I mean) and are pretty sure you've found a keeper and that she feels the same way. Paradoxically your detachment will make you more attractive. Don't be too available.