Speaking of poly and the bible, Abraham and Sarah totally had a unicorn -- Hagar. She was younger and subservient (literally a slave) and they had her bear a child for Abraham. But then Sarah flipped out because she felt like Hagar was getting uppity (so common amongst unicorn hunters...) and kicked Hagar out. God told Hagar to be a good girl and respect the primary couple, and she was allowed to come back until Sarah flipped out AGAIN and kicked Hagar and her son Ishmael out for good when her own kid, Isaac, was born.
Aside from adding the poly terminology, I'm not making a word of this up. Unhealthy poly relationships are an ancient phenomenon...
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.