What should I do ?

the other night I happened to be out for a beer or two and ended up getting attention from someone a lot younger than me like 10 years and it was lovely to have a wee flirt/kiss and a dance. Now one of my friends is kind of giving me a hard time from it , don’t think I done anything wrong like tbh, and now they are trying to wind me up and make me feel bad for enjoying a bit of attention I got from a younger guy. To put the age bracket into perspective I’m in my early thirties.

I have just been ignoring them anytime they bring it up - should I say any to my friend about it ? Or just leave it ? Like me and the guy are both adults at the end of the day.