I love Friedman. I hope you will too.
I have reconstructed one of the late Rabbi Ed. Friedman’s parables which I first encountered as a footnote in his paper entitled “The Challenge of Change and the Spirit of Adventure.” (It’s essential reading, by the way):
A man was getting ready for heart bypass surgery when his organs called a (secret, of course) meeting. Lungs declared they would refuse to participate in the surgery saying the host had no business making them work harder after all they’d done for him for all these years.
Spleen agreed. Pancreas nudged in agreement. Actually Pancreas winked, but it is hard to tell with Pancreas.
Intestine mulled endlessly on the matter and felt (it was rather an emotional moment, actually) it should side, if he sided with anyone, with Spleen.
Intestine, who found it hard to have an opinion anyway, also did everything slowly.
The Kidney Twins, in unison and stony-faced, kidded a just little (they are not given to too much humor) that he had had the audacity to think they’d work any harder on his behalf, “Who does he think he is trying to get all well?” Their comment became a scoff.
Bowel, not given to small talk, churned the over the matter, repeatedly sighed a long conspiratorial, “Nooo. Nooo. Noooo!”
Liver, still seated, said he wasn’t about to change after all these years. Then, standing to address the meeting, said, “Who exactly is he to decide without due process anyway? New lease on life, a new Heart around here will mean new demands. Everyone’s been so worried about old Heart for all these years, no one gave a rip about us! We’ll show him who is boss! He’ll get all active – which means we’ll have to, too. No. No. No. What does he know about taking out the trash anyway? I do the REAL work around here!”
Round the table the organs voted and a decision was reached. “No! No to surgery for our ambitious, unreasonable, demanding, host.”
Just then Brain spoke up, “It’s none of your business. It is not your decision to make. Get back to work.”
(I highly recommend Friedman’s Fables and Failure of Nerve by the same author.)
I was silent to not make trouble. My husband says I am jealous. How can I be jealous of a man? I think maybe he should take his clothes and go and live with him. He must have something I don’t have. When I see him I can scream but I keep my cool. The friend will say, ‘Oh my sister! So glad to see you.’ My blood boils. I know God says you have to let these things go and pray otherwise we don’t have blessings. Give me advice before it is too late.” (Letter shortened) 
How much of your husband are you willing to share? How much of a threesome are you prepared to be? These questions must be answered. This issue is not about the friend, his wife, or even your husband. Everything, for you, hinges on you. It is not a matter of jealousy and your husband is employing a sneaky trick to suggest it is. This is about divided, or confused, loyalties. Challenge your husband to grow up, to decide on how his loyalties are expressed from day to day. 
emotion to feel, to use, but it will persistently eat you from the inside, leave you feeling even angrier, even more powerless over your life. Then, apart from punishing your spouse, they (resentment and bitterness) will punish you and contaminate all your relationships. In short, they have no boundaries and they are on a mission to deface all that is good and pure.
I am afraid people will think less of me. I don’t know what to do, where to go. When I ask him about it he says he didn’t it but he did. When we go to bed he puts his back to me. When I tell him I love him, he says I’m trying to start a fight. I think everybody will be better off if I’m not here anymore. They can start over without worrying about me. I have nothing. Please help me, please.” (Edited)
difficultrelationships.com 