Ever meet someone traveling and forget to get their info?

This happened to me in barcelona last year like I was chilling outside a small cafe in Madrid and some stranger asked if they could share my table since the place was packed and we started talking. At first it was just small talk about places we want to go and hobbies, but then it lead to more serious convos. Like we even talked about the economic state of the world. Which some might find funny, but I felt open with them.
Then they left to catch a train. Said goodbye to each other knowing we probably wouldnt see each other again. But we both fucked up not sharing our contact info, at least whatsapp or something to stay in touch.
Earlier this year I was scrolling on pangea app and I got a message saying: “Hey, weren’t you the one obsessed with churros?” I laughed out loud. Knew immediately it was them. Small thing, but made my day after. Now we text each other every month or so. Maybe will meet again soon who knows??