So I can find it again

Because I just spent 10 minutes re-tracing my steps through various journals to find this link to find this word and definition, I'll post it here where I can find it again:

http://www.libidomag.com/nakedbrunch/polyamory.html

"There is a new term for the opposite of jealousy. Compersion is the feeling of joy that comes from knowing that the one you love is well loved by someone else."