For a life-changing convo with W, I think you owe it yourself and W to leave no stone unturned so you can look in the mirror and say, "I gave it all. I gave it my best shot."
I think the Nonviolent Communication book will help you formulate how to approach W and communicate your needs in a loving way.
As for ending the limbo, it will be something you will decide in due course after reading the book.
As you well know, it takes two to tango. It has to be done with the full free-will choices of both partners.
I am all for better and improved communication regardless of what happens in your sitch. If your W isn't interested in having a better, improved M with you, then the next lady love will be very lucky to have you! And reap the benefits of your hard self-work.
The way I look at it, you have absolutely nothing to lose by reading these books and everything to lose. Right?
