And here is a big place where men and women are SO different. I could never have a relationship with a person who I considered too childish and immature. I would feel like really old (and I'm only 35 LOL), and for me I would certainly prefer to stick with persons my own age or older. In some instances, I might consider younger, but it would have to be a very mature person who had some things going for him. Although sex is a VERY important of a relationship to me, there are other things that are important too.
Oh, and I would NEVER date a teenage. I would feel so foolish!