This is an interesting thread to me, seeing as I always end up with older guys
(i'm 19 going on 20 and I seem to always end up in a relationship with a guy in his late 20's to mid 30's, and no never before I was 18, I only started dating when I turned 18)

I think part of it is nature, like was said before. Also like Bebop said it's the fact that teens look so much older than they are, I know at 15 people thought I was 21, I've always looked older than my age, partially because of my height.

I wonder if some of that is a craving for youth? not in a sexual manner but just for the feeling of being young and free?

I don't think it's right if a older man makes a move on any girl under 18 year old girl, or tries to seduce her, but lets just look at it how do you know if who your looking at is the age they look like?

I wish I could add more but at the moment my head is mush, too many hours at work, will add more later when I"ve had some sleep!