"Unicorns?
What is a unicorn?

A "unicorn" is a beautiful (of course!), single polyamorous woman willing to be sexually and romantically involved equallywith both members of a couple in a closed relationship. The unicorn is expected to be with both of them, and will not be allowed to have any other partners.

This is one of the most sought-after arrangements when a couple new to polyamory looks to open their relationship. Couples usually discover such a woman is almost impossible to find. This Web site explains why."

https://www.unicorns-r-us.com/

words on jealousy

https://theanarchistlibrary.org/library/emma-goldman-jealousy-causes-and-a-possible-cure

CN some ableist wording

non-monogamous relationships also have the potential to become toxic or abusive

CN abuse (details left out)

https://medium.com/@inesrolo/i-was-in-a-polyamorous-and-abusive-relationship-for-7-years-heres-what-i-learned-5d87d6f57acd

"Love is abundant, and every relationship is unique

Relationship anarchy questions the idea that love is a limited resource that can only be real if restricted to a couple. You have capacity to love more than one person, and one relationship and the love felt for that person does not diminish love felt for another. Don’t rank and compare people and relationships — cherish the individual and your connection to them. One person in your life does not need to be named primary for the relationship to be real. Each relationship is independent, and a relationship between autonomous individuals. "

— extract: "The short instructional manifesto for relationship anarchy" by Andie Nordgren

read more here

boundaries vs. rules within (non-monogamous) relationships

https://www.youtube.com/watch?v=XhkVin01LaE