Re:
I'm thinking both (but of course I'm not the OP).
I'm my original post, when I was thinking of stability - I was thinking of longevity yes, but not an unhappy partnership that stays together just for the sake of "till death do you part". I'm my own experience, the main thing that wasn't working for us was monogamy - the rest was pretty awesome. Hence, the move to polyamory, instead of chucking the whole relationship in the trash. But I do see what some have said here about adding more partners to the mix can add chaos and drama which could be potentially de-stabilizing. I guess all we can hope for is to share love with each person for as long as that relationship makes us happier better versions of ourselves.