This is true. The way he represented the idea about the counselor who believes in 3-way-marriage... no, I doubt he is ready for even considering the idea of polyamory.Be careful. To most men, a wife claiming she is poly is no different than a wife proclaiming she wants a divorce. Seeing other people=end of marriage in most peoples eyes.
But, on the other hand:
This is very true as well. The whole process of counselling would be wasted time, money and energy if you would go to it with the idea of repairing a monogamous marriage in mind. Poly is something totally different.I don't want to go through counselling and then be like "oh by the way...there's this oooother thiiiiing..." and then have to go through it all again.
You are in a tough spot, for sure. In many ways.
Yes, there is hope for you. You love him, he loves you. The question is: does he love you as the person you are deep inside? I truly hope he does. Anyway, it might take him a while to really digest all the reasons why you left the church. From what you have told here it sounds like he still hopes it is something temporary and motivated by some problems in how people have handled some things, rather than real change of beliefs. This alone is a huge thing to process. Add polyamory on top - you will challenge his world view fundamentally.I just asked him how he can act normal after the discussion we had yesterday about counselling and divorce and he said "I love you, and that surpasses anything". So there is hope for us yet.
I wish all the best to you!