Do you find yourself attracting older or younger members of the opposite sex?

I’m convinced that there is something about people that attracts either older or younger members of the opposite (or same, I guess?) sex. I have a friend who is 28 who is always getting hit on by guys in their early 20’s. However, I, who just turned 20 (yesterday! :) usually attract guys in their mid to late twenty’s. I’m not saying it’s a bad thing (I think older,not too old, confident guys are sexy), it just piqued my interest.
So, who do you attract, and who are you attracted to?