English compersionThe satisfaction that your love partner has found another partner (in a polygamous relationship).

Couples in polyarmourous relationships often openly talk about who they date and how it affects their lives. Compersion then is the happiness experienced when your partner has found another partner and lives happily with them (in addition to you). [https://en.wiktionary.org/wiki/compersion](https://en.wiktionary.org/wiki/compersion)