Originally Posted by MorningTwilight
I can't stuff the genie back in the bottle--now that I know I'm poly, and it makes so much sense to me, I feel like I'm either doomed to a life of anxiety, frustration, and sleepless nights, or I have to risk my marriage and live true to what I am.
Yup, pretty much. It seems that really there is no alternative for some poly people that are born poly (identified), rather than choose it as a dating style or lifestyle that they could drop for monogamy. It seems you need to make a move. Good luck!
You might try a search for "poly/mono" in the tags and find threads on how others have worked out how to go about approaching a mono partner.