It's an interesting topic, because I remember when I moved to London at 22, I thought anyone over 30 was ANCIENT. I was a twink then, sort of, well more of a boyband looking type lad, and got a lot of attention from "older" blokes. But I wouldn't have dreamed of going for someone above 25.
Now I'm 42, and I get SO much attention from 21 year olds. I live near a university town and seriously, I could have twink sex every weekend if I wanted to*. Did things CHANGE in the last decade or am I just an outlier and it's always been that way?
*I really don't though. Not that anyone would believe me.