Heh, I think my wife and I accidentally stumbled on your swing dancing group. Is it the one that meets in that second floor bar with windows facing west just south of Sukhumvit from the British embassy? Looked like fun but people taking it oh so serious! Lots of expats. We were simply relaxing and amused at the difference with China, but I've since seen a similar event in Chengdu and we've since met an Aussie tango teacher who has just started up here in Kunming. From what I understand, swing is super popular with US west-coasters. Seems a bit of a thing in this area right now. Of course it's probably a faded fad by now in the more US-connected Korea/Hong Kong/Taiwan zone...

Guess I am the exception that proves the rule. 33 here, moved at least 10 times in the last 15 years, including 3 major international jumps, but still have a big circle of friends across the region in multiple cities. We are definitely more aware of parents now that we have a child but overall most friends are still without. Certainly couples are more approachable now than singles, though.