Earlier quoted context omitted.
I'm not surprised at all... because the same thing happened with Ingress - the previous game from people behind Pokémon Go! I was only part of the local community of players (green team in my city) briefly, but it was enough to learn that people in it talk to each other all the time (via Hangouts at that time), they see each other every evening, play together and then hang out together. That's one of the strongest fr…
Unfortunately, once you stop playing, there's a big chance that all of this goes away. Side note: I'm surprised how in both Ingress & Pokemon GO, friendships cross team boundaries; you can be adversaries and friends, like in any respectable sport.
(For those unfamiliar, Ingress players have tongue-in-cheek epithets for the opposing team. Green team are "frogs" and blue team are "smurfs".)
The date didn't lead to anything as I don't think she had any romantic interest in me, but it was definitely a funny point when during a lull in conversation I paused and gravely asked if it was OK for her to be on a date with a "filthy frog" and she busted out laughing.