I'm 25 f, would I be wasting my time with a 21 year old guy?

Be honest. I know guys tend to be attracted to younger women, right? The thing is he thought I was 21 because I look young. I told him I'm 25 , he doesn't seem to mind. I'm just not used to dating younger guys. What if when we are a bit older, I end up being too old for him? Like when he is 25 and I'm 29. Won't he want a 21 year old? Maybe I am overthinking. I just want honest opinions on what age I should go for.

I'm 25 f, would I be wasting my time with a 21 year old guy?
Post Opinion