compersion (basically finding joy in the joy your love finds in loving another or something along those lines).
It's another one of those words I've never heard of but will take your word for it.
Yes, I find great happiness in seeing the joy my husband finds in loving another. To me, his happiness is paramount, as is mine to him. I am very secure in our relationship, I know that our bond is amazing. I enjoy watching him interact with other females, I love seeing him flirt and laugh and smile with others because I know it's who he is and it's what makes him happy. He doesn't "sleep around", he has far to much respect for me and for himself. But in his quest to find the "perfect" match for himself, for us as a couple and as a poly family.. I not only support him, but I help in any way I can.
Don't ask, trust me, you won't like the answer... no one ever does.