I know what is wrong, fixing it is another story. Your W has to want to fix this. I do not think it is something you can fix. Time, may do it. Anything that you suggest will be controlling and manipulative. I can make suggestions on how to FIX the problem but I don't think that for the survival of your M in the long term that it is a good idea.
You are being rejected in the bedroom. Do you think your W knows this? Does she want to fix the problem?
I guess my solution is patience. Puppy seems to want to take action. What do you think Burt?