I am curious, are there poly couples that are more then triads or quads ? Or are quads as big most polyamory couples go?
Large groups where everyone is romantically and sexually involved with each other are extremely rare. Sometimes, if they do exist, they can become toxic or even cult-like.
Plus, desires and loyalties tend to shift. And if a group is living together, people's schedules change, or jobs change and people have to move away, personalities clash, shared interests vary, etc., etc.
By far, the huge majority of poly relationships happen one-on-one. A is dating B. But A is also dating C. And B is also dating D. D is dating B and E. And so on.
In my case, I am dating Pixi and Aries. They are my co-primaries.
Aries is also dating Sophie.
Pixi is also dating Malachi.
Sophie is married to her husband X.
Malachi has not been interested in dating anyone else, so he is monoamorous in practice.
Aries also has a casual "comet" partner, Missy, that he sees occasionally.
Missy has a boyfriend Z that she sees regularly.