How do I stop craving my wife being promiscuous

[Hillbillymatt]

Hi, I'm 53 and have been married to a wonderful woman for 30 years. For most of that time I have had recurring yearnings for her to sleep with either another man, a woman, or a couple. She's not interested and fair enough, but in recent years my desire for this has intensified to the point now that it is obsessive. It affects me both in and out of the bedroom as I cant get the weird kink out of my head! I have been working at improving my input into our marriage, and this fetish of mine is now a problem. She doesn't want to hear or talk about it again which I understand as I nagged her about it in the past to my shame. I need to clear it from my psyche and engage with her normally. Anyone have any tips on resetting sexual proclivities?