I had to actually go into google groups and search for my name to figure out when, because my sense of time is so bad, hah. Looks like it was 2009-2014, which is longer than I would have guessed--I was going to say 'probably a couple years' before I decided to check.

We were, as far as I can parse out timelines (which is extremely far from my forte), consistently plural from about age 7 to age ~16-18, and then singlet to... ~19-21? and then plural again from ~19-21 to... ~24-25 I think, then singlet again. (I'm 27 now.) (No one ever had any idea what was going on before age 7--that's when the oldest documented came around--and the best guess of those that were around earliest was that there was one person with the body's name before then who never existed thereafter, and hell if we know what happened to her.)

I saw Zyfron's stuff about Swirly recently! It was good to see some discussion of things like 'I'm accidentally acquiring other people's preferences', even in a different context--when Kyan left I suddenly had her favorite color, preference for floral patterns on everything, and sexual orientation, which was wildly disconcerting at first.