I just read this thread now, I don't know you well but I have met you a few times over on the "game" and I can see you are a normal healthy nice man and very likeable. You have a good friend in our Poopsie. I know Hot Chocolate and her advice is very good, she is a wonderful lady and an example of someone who survived something like you are going through.
IMO I think honesty is the best thing for you NVL, Life is to short to live a lie and pretend to believe. Your wife should be your closest friend, your soul mate, how can you be that with her if you don't agree with each other and she witholds her affection and sex from you. I am so sad about the children being in the middle of this. ((((((((((NVL))))))))))
Myself I was the one that was the woman in the marriage and the JW, my poor non believer husband had to put up with me and my JW crap. I withheld certain types of sex, he cheated on me. Told me why, begged me to give him better sex. I stayed on with the religion and we were drifting apart. I loved him and my 4 little children to much in the end to continue with the religion. I decided my family was more important and having a husband who loved me and so I faded.
I still believed I was going to die at Armageddon though and felt guilty but I decided I had to live my life on reality and not a religion and faith. Later I found out the truth thankfully. Thats my story. At least you know its not the truth so that is a positive thing.
Hugs from Velvet aka Deceived