Compersion

Compersion describes a particular kind of pleasure: feeling glad — genuinely, in your body — when your partner is glad with someone else. The most common framing in the community is as the emotional opposite of jealousy. Where jealousy is the felt sense of threat or loss, compersion is the felt sense of expanded shared joy.

Compersion is not the only emotionally healthy response to a partner's other relationships. It is not a moral target you fail at. Many practitioners go through long stretches of polyamory feeling neutral about their partner's other partners rather than actively glad — a calm, settled neutrality is widely considered fine. Compersion is a thing that sometimes happens, often unevenly across different partners and different stages of a relationship.

There is no reliable trick for producing compersion on demand. Practitioners who report experiencing it commonly point to underlying conditions: a secure attachment, genuine fondness for the metamour (or genuine respect, if not friendship), the absence of resource scarcity (time, attention, money) that the other relationship would deplete, and a felt sense that one's own primary relationship is solid.

The word itself is a community coinage rather than a clinical term — it appears in Kerista Village's writings in the 1980s and entered wider use through the polyamory community in the 1990s. Its etymological cousins include the German Mitfreude (shared joy) and the Buddhist mudita (sympathetic joy at another's happiness).