A few years ago I started a profile on a social media app to share programming endeavors and humor.

After a year or so I became somewhat close with the ~20 subscribers out of my ~1000 that would always comment on my posts. We started a programming group chat and all hung out there, sharing stories, posting random pics, etc.

When I was interviewing with my current company, I shared all the details with the group and kept them up to date while they cheered me on and wished me luck. Once I got my offer everyone was ecstatic.

One friend in the chat remembered my company has an office in NYC, where they live, and asked if I could arrange a tour. I asked around and it seemed like it wouldn't work out, but just a few weeks later I was sent to the NYC office to collaborate with another team for a few weeks.
I let my friend know I would be in town, and when the time came - we met up, toured the NYC office, ate really good tacos, and enjoyed the city.

10/10 would friend again.