Do younger guys enjoy sex with a girl that is older, or is it just curiosity?
Depends on the guy. Some guys like em young, some guys like em older. My personal experience, most younger guys act like little boys. Go for the older ones. My boy is older than me and I wouldn't have it any other way.
Some do. Ew my 19-year-old ex boyfriend had sex with a 35-year-old woman while we were dating.
Do as you feel it good, but do not think of this relationship as a long one.