My biggest social network is indeed a choir. By far. Most of my friends are from there and many couples are forming there. It's also way bigger than any team I could be working in.

Also, in my current company (many people WFH, at least partly), actually several couples formed because people meet at the seminars, at a time there is no stress related to work, in a relaxed setting. So remote work can be suitable for this too with the right ingredients. The company was not as remote as today before covid, but has been spread across two countries (mostly) for years so this is similar in this respect since the couples are mostly people from the two countries.

I've also built friendships from by previous work, when I was at the office, so this is also true.

I'm sure with time I'll make long lasting relationships at my current company too. We are already happy to see each others when it happens.