I like tangle. I also like tribe.
I haven't really stop to think of a term for my current relationship configuration. If I were going to stick with an alphabetical term, I guess I'm the center of a Y, in that I have Fidelio and two lovers, none of whom currently have other lovers. Nope. I don't like that; it's too much like I'm "the center" when we're all the center.
Tribe. I'm going with tribe. Tribe for the win!