Compersion

Compersion (noun) – The state of being happy for another person’s happiness. Often used to describe being happy at seeing one’s romantic partner experiencing happiness with other partners.

Example

Chris and Dotty are romantic partners. Dotty is also romantically involved with Stan. Chris feels compersion when he sees how happy Dotty is with Stan.

Further Reading

Couple Privilege

Couple Privilege is the advantage a two person partnership has. It is a priority that is given to a couple over other relationships. Often this is manifested in society when the couple is open to the world about their own relationship, but not other relationships. It is often seen when an invitation is made with a +1 and it is assumed the known partner is will be the +1.

Further Reading

Poly For Us article: What is Couple Privilege?

Metamour

Metamour (noun) – Your lover’s lover. In polyamory you may have a romantic relationship with someone who has more than one ongoing romantic relationship. Someone that your romantic partner is in such a relationship with, but you are not, is a Metamour.

Example

Chris is in a romantic relationship with Jenny. Diva is also in a romantic relationship with Chris. Diva and Jenny are just metamours.