More than one partner in a committed relationship

So I am in a Closed Triad and we are actuAlly looking for a fourth, but it is a Closed relationship no one plays around unless we play together. I was honestly just curious how many people were like us. I sometimes feel like there at not many peoe who see things the way the three of us do. We have always known from the beginning that there was going to be four and we are currently at three. I love my bears and they I.