I once went on three dates with a guy I met this way on the A train.
Kathryne
I have mild face blindness (prosopagnosia) and mask this by half pretending to recognise everyone and using their puzzled look as a sign that no - I don't actually know them.
This worked fine until a few years ago when I met someone at Sydney Parade DART station who...was doing the same thing.
Duncan Jones (aka Merrion) (he/him)
A lady working in supermarket said hi one day and said she was my neighbour. I now need to smile and say hi to everyone working there as I have no idea who she was.
