@TakeYourFinalPosition
This is not the thread that I expected from the title
Me neither
But in answer to the OP.
I've been part of a threesome since we were 13/14/15ish. We are mid-late 30s now. Although me and one of them have actually been "best friends" since we were 3 and 4.
Does your threesome have a queen bee?
Very much not so.
Does one person tend to dominate, eg make decisions on what the group does?
Nope. One person will suggest eg "shall we meet for brunch?" Then a couple of locations are suggested and the most convenient is picked.
Do all 3 of you equally like and interract on a 2 by 2 basis?
I think the other 2 have less in common now than i have with either of them
Eg. Friend 1 is an eco warrior, lesbian, has MH issues, isn't into fashion, loves animals, hates kids.
Friend 2 is very into hair, beauty and fashion. Drives a massive 4x4 thing, loves kids, hates animals, isn't bothered about the environment, stereotypical "girly girl".
I'm a balance of the 2. Friend 1 and I meet far more often than either of us and Friend 2, but that's because she moved a couple of hundred miles away so it's a practicality issue.
Do you secretly prefer one of the others to the 3rd person? Nope. They are my "soul mates" in a non romantic sense. I think they both bring different things to my life (I can't speak for them but assume its the same). They both have traits/opinions that I hate, but I'm sure the same is true of me. Friend 1 and I are possible 'closer' but again that's possibly down to geography, and although she went away for uni it was still more local than 2 so I guess we stayed close.
Do you bitch about person 3 when there are just 2 of you together? Nope! I dunt think we have since we were about 16! 2 of us might discuss something we've discussed as a 3 if we were worried about it. But more in a "what can we do to help" kind of way. For example, last time we met as a 3 Friend 2 said a lot of things that made her marriage sound very unhappy. When Friend 1 and I met more recently we discussed how we felt about it and are still trying to work out what, if anything, we do.
Having said all that we've been friends for years and years and years. We are so in tune (particularly Friend 1 and me) that we can communicate wordlessly. I think longevity of friendship plays a part for us.