So I’ve talked to so many people. Most people see a polyamorous relationship as a separate dating scene or small group 3-4. Though I just call em polys and specify later. For me we have came up a with a system called “Closed Poly”. Meaning everyone in the group is with everyone and if we wish to add a new member, Everyone has to agree.
Then we had to add another tier to the poly because I started adding siblings and parents of the other partners. So we had where everyone was with each. Then the blood relations was not together of course separated by polys. Though the blood relations are with everyone else but their relation. Currently 48 people.
I had to add I was also with his older brother but he ended that one lol. He hates his older brother but as long as didn’t harm his sister he didn’t exactly care. Since I made this aware, he knows how I treat people and love them. So he knows I will not harm her or break her heart. So within that reason he was more than fine with it for mainly that reason.