I suspect my men have compersion for each other, but it's more like they're happy I'm happy. They love each other dearly, but I think both of them prefer to pretend that I'm not actually with the other. CBF is a little more inclusive of FBF (when I'm with CBF he talks more about FBF, and more often engages in talk about my relationship with FBF)(FBF tolerates discussion, but doesn't generate it, and prefers, I think, to imagine that he's not actually sharing~and that's mostly my conjecture).
But I wanted to post, because reading this thread made me think on it all. And I think that they both thought I would pester them less if I had both of them; and they have both found out that's not the case. I still want more attention than either of them is truly interested in providing.