If you went on one date with a girl. . .

When I see a girl who actually catches my attention, I consider it to be an amazing thing, especially if I find her interesting enough to want to ask on a date.

The most common reason that I would not ask her out on a second date is that she just isn't the person that I had built her up to be.

If she's not someone I could see myself with and I'm in no mood to take advantage of her sexually, why ask her on a second date?

Let her move on and be with someone that she may be a better fit with.

If she is a prude and won't do anything fun...e.g. have a sip of sake etc...

if she's too slutty

could be a number of things depending on how neurotic he is honey...

Lack of spark

If she was rude, the date wasn't any fun, nothing really in common. Could be lots of reason but id assume those are the main ones.