Polyamory – Wikipedia

Polyamory (from Greek πολύ poly, “many, several”, and Latin amor, “love”) is the practice of, or desire for, intimate relationships with more than one partner, with the consent of all partners involved. It has been described as “consensual, ethical, and responsible non-monogamy”. People who identify as polyamorous believe in an open relationship with a conscious management of jealousy …

: https://en.wikipedia.org/wiki/Polyamory