Originally Posted by Karma
A broken relationship is a broken relationship, regardless of whether it's polyamorous or not.
But I really think that the same thing happens just as often in monogamous arrangements, as far as people clinging to broken relationships because they lack the inner strength to fix things or end things.
I think Karma gets this exactly right.
The only specific risk here is for someone who doesn't know any other way to end a relationship other than leaving for someone new. I don't imagine that describes very many people doing polyamory.