I was 39 at the time, starting to feel a little tired of the dating game, and didn't feel like dating younger girls. The girl I met seemed a bit young, but guessed she was about 27, and figured that 27 isn't really that young.
We go on our first date, and it turns out she was 19. She'd been thinking: well he's a bit old, but he's probably about 27, and 27 isn't that old.
No second date.