Ah, to see the word "scalene" in conversation...
For me, now that my partner is dating someone, whose husband is dating my metamour, and OBTW, the wife and hubby have kinda-sorta had some fun time together with my metamour while my partner is absolutely not interested in that at all (at least at the moment), I hear you on the "WTF is THIS geometric structure?"
Maybe I'll call this new thing a rhombus with a stick poking out the corner. Or maybe "relationship spaghetti" is more accurate at this point.
Mono. Divorced, two kids (DanceGirl, 14; and PokéGirl, 11), two cats, one house, many projects.
My partner. Poly. In relationships with me, Xena, and Noa.
Poly. In a relationship with Chops. Dating others.
Married, Poly. In a relationship with Chops.
Blog thread: A Mono's Journey Into Poly-Land (or, "Aw hell, there's no road map?!")
Slightly more polished blog with a mono/poly focus: From Baltic to Boardwalk