I already did when i visited my aunt back in her home country for 2 weeks when i was 15 and she was 25. It was by far the best experience of my life but i wish it never happened.
I got extremely lucky since she was sexually repressed and really lonely (due to religious and culture reasons), and only connected with me. We slept in the same bed and i can't believe my family even allowed that, we made out every night and eventually did the deed which didn't even last a minute when she threw me off and started crying claiming how regretful she was and how allah will never forgive her. She has been trying to repent ever since and we used to still talk afterwards until she got her visa to america and stopped contact completely after that.
Trust me boyos, this shit is not worth it, if i wasn't such a sexually charged teen i would never have done it, getting family involved makes it too complicated and you'll lose that person forever. The worst part is i hit puberty a year later which turned me into an ugly incel ogre, so i'll never be able to recapture such a beautiful experience again, it's fucking torture.