The thought or question was born from comments written here many times. I guess to distill it further : the decision to try poly...similar to a standard monogamous marriage contract. It has been said here many times " I read this book and I think I'm poly and I need help in telling my spouse because I'm afraid it will end my marriage. Or the pursuit of this lifestyle will end my marriage. AND it has over and over. Is that just standard rollover or an additional stressor.
So if the converse happened. Two people who had been in numinous poly tangles and for whatever reason they find each other and "decide" to be monogamous FOREVER, its LOVE
... marriage contract/vows blessings by the Pope. It was a beautiful affair but 5-7 yrs in it fails.
Was it the communication ...lies. etc. etc