I don't age discriminate....dated a guy 13 years older, and another recently who was 6 years younger. That said, wtf is up with all the young dudes hitting on me lately? Just yesterday I had to be like "You do realize I'm eight years older than you??" with some cocky little kid in response to him asking me out (who did in fact know of our age difference and apparently didn't care). I'll date younger, but that's way too much.
Age is just a number. He (the younger one)asked you out because he saw/noticed your "youngish" personality. That's all!