Butterfly it is not a question of boring really (even though that is the word I used) I think it is more being turned on by attitude.

So a girl who was into sex (and thus have an attitude that I would dig) would probably have had a few partners (unless as I mentioned she was in a long relationship).

Obviously the rule doesn't work but all this came from me basically saying that I don't have any hang ups about a girl who has slept with a few people. And if I had to choose I would probably choose a girl who had.