I am not worried
My friendship with Jill lasted 48 years. Our friendship as couples lasted 26 years. Jill and I often discussed expanding our foursome this way but she was afraid it might change our group dynamics in a detrimental way. What we have now seems to be working in a way that is enriching and healing for the three of us. Nothing will change our friendship and that is the base of our new relationship. Both my men seem happy. The new relationship is almost 6 months old. now. If it does not last that is okay too. I want both of my men to be happy. Life is constantly changing and evolving. Permanence is thing that is fleeting. One of us could die tomorrow. I think the quality of the time we have together is more important than how many years we last as a trio.