At this stage I don't believe he's capable of doing that. SM is so wrapped up in his W it's scary. How many months have gone by with no progress on his part? I shudder to think what will happen if/when his W wants to end the M. Clearly this is a man who cannot move on with his life without his W.
A lot of the time I actually feel like how you describe SM, but am working on it. My W isn't in an open relationship so I can't say how bad I would be if that was the case. Trying to rewire the brain away from what, for years, has been the most important thing in existence is tough.
M:12y - BD:12/11 - D:6/13 - 4Ds
"The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy." -MLK Jr.
