Did you tell her your real age? She is in her 20s and what's her agenda? I've never met 20somethung years old wanting to date a man in his 60s.

I've met women dating men 20 years older but not 40.

There is no crime in this of course but I'd wonder about her true agenda here. And is it a romantic date or only you think it's a date and she thinks it's just a get together? You went through many of those when you assumed it's romantic encounter and they didn't think that at all. Just be careful so you don't get hurt again