Since she doesn't think I will be able to change or get over her affair, she just doesn't want to prolong the end. I have to agree, we're both miserable.
The Harley concepts are wonderful tools for anyone wishing to improve upon the quality of their marriage. It doesn't necessarily always take two to put the concepts into action.
You have to WANT to save your marriage enough to do the work. You still have an ounce of hope for your marriage or you wouldn't be posting here.
It sounds like you have done some reading but have not fully put the concepts to practice.
Your W is still in contact with OM therefore, you can assume the A is still alive and well. She refuses to divulge important information to you which in turn dwindles your trust and love for her.
Have you exposed the affair?
Have you attempted Plan A?
Have you eliminated LB's
Have you attempted to meet her EN's as much as is reasonable during the affair?
Have you insisted on her having no contact with OM, to include a written letter and job change?
In light of all of the above reaping no rewards, have you attempted Plan B?
It sounds like you are at the Plan B stage now. From what little you posted, it seems that you have little or no love left for your W.
Plan B is where you remove yourself from your wife and her actions which are causing you so much pain. You 'choose' to have no contact with her whatsoever until she agrees to permanent no contact with OM and agrees to make an assertive effort to work with you on the quality of the marriage.
The folks on
GQ II are pretty knowledgeable about this stuff. It might serve you better to post there also.