@Cubit
I think it sets a worrying precedent, the onus was on him to confirm she wasn't a child - he didn't.
Reasonably, how far do you go in confirming someone is legally able to consent?
I have NEVER sought to confirm this with anyone I have slept with, ever. It has always appeared obvious, they work, they have their own place, perhaps drive (not always). I'd be very surprised if anyone on here has actively sought to confirm that beyond observing what appears to be the case.
If you find someone on an adult dating app, if they look old enough, sound old enough and appear to have their own home and vehicle, reasonably what more are you meant to do? Ask for verified copies of birth certificate (easy to fake if you wanted to, not everyone has one to hand anyway), ask for a passport (again not everyone has one).
I certainly looked old enough at 12, I had DD cup boobs, could hold not just a conversation but debate issues and hold my own opinion with an adult at that age (that got me in a LOT of trouble with teachers). I was certainly more mature and worldly-wise than many 19 year olds!