A "poly tangle."
A hot poly mess?
Maybe... a lollipop? Like, if we see the triad as a circle-shape instead of a triangle-shape with your relationship with your husband sticking off as a straight line. Hmm.
Me, 30ish bi female, been doing solo poly for roughly 5 years. Gia, Clay, and Pike, my partners. Davis, ex/friend/"it's complicated." Eric, Gia's husband. Bee, Gia and Eric's toddler.