When you don’t want to open your relationship

My partner of 8 years has suddenly decided that she’s poly and (apparently) was the entire time. I’m of the opinion that she’s done irreparable damage to our relationship by even bringing this idea up. The idea of her being with anyone else is completely unappealing to me, do I have any recourse other than to end our relationship?

This column has been moved to the Non-Monogamy Help website.