@clare1087,
Hi Clare. I don't normally respond to this type of thing but your story reminds me of my own situation.
I am 46 and my partner is 45. We are not married but we have a daughter and we have been together for over 18 years.
My partner "D" suffers from Lupus (SLE) and Rheumatoid arthritis and she has done for quiet some years. At first the relationship was good but as time has gone on the intimacy has faded and it has now been over 5 years since we last had any form of sex and even before that the sex was extremely limited, In fact we have only had sex about 5 times in ten years. The lack of intimacy has been brought on through D's disability and medication which we can do nothing about. Frustrated is a mild understatement, The frustration is only mildly satisfied by masturbation. I miss the intimacy, the touching and even the kissing and I crave the passion but unfortunately it has now got to he stage that I feel we will never be intimate again. To lie next to someone naked with no touching can be like torture.
The sad thing is we love each other. In some ways it would be a great deal easier if we didn't.
Just over five years ago the frustration and the physical loneliness became unbearable and I had a brief affair. The sex was fantastic and I hate saying it the thrill of the affair itself was unbelievable and a great aphrodisiac.
This is where it became serious. The affair was with a friend of the family who was genuinely suffering in a similar relationship.
It was supposed to be strictly a physical arrangement only !! but emotions run high when you are so close with somebody else sharing intimate moments and lets face it enjoying life again.
What I didn't expect was for the (Other woman) to declare her love for me after a few weeks.
It became a extremely intense situation very, very quickly. So much so I confessed everything to D and I tried to explain why it had come to this.
Yes we are still together after a lot of hard work.
The point I am trying to make is that you may be ready for a physical affair and I fully understand why but would the additional person be the same. Can they handle it, If not you could risk losing everything and hurting your other half.
I am not saying don't do it !!! In fact I would quite happily have a similar arrangement again but you have to make sure that the person you have encounters with is of similar mind.
I feel your pain and frustration and I hope you find your answer.
P.S If you turn out to be close to me in Oxford give me a call LOL ...