Originally Posted by
MerryH
Why don't you ask her out on a date again? If she says no, or avoids giving you an answer, then she's not into it. Forget her.
I think it would be a bit inappropriate to ask her why, or what happened. First, as mentioned before, she doesn't owe you an explanation. Second, I can say with some certainty that you're not going to get an honest answer. I mean, it really takes a blunt, candid person who doesn't care about hurting others to actually tell you to your face the honest reason. "You're too ugly, you're not fun/funny, you're annoying, you're too clingy, you're embarrassing to be seen with, etc." Would you really want to hear this from her? Lastly, it's just kind of a lame thing to do, especially with someone who you only had one (long) date with.
You're just going to have to figure out for yourself what might have happened.