Dito It's all in what moves you and what doesn't.
I'm 40. I've been with 21 all the way to 51. We don't have kids, so the youngsters don't gross us out.

I didn't have much to talk about with the 21-year-old, but there was a 23-year-old couple we could have spent a lot of time with if he hadn't shipped out to Iraq. Compatibility is as much about common interests than about age.