Not sure what to say about your W. Sounds like she exerted a lot of self-control, maybe too much, over the years, and then the dam broke.
About your willingness to do anything -- I was like that too. That can lead to co-dependency type of mindset. I think it's important to find yourself during this crisis. Who are you. What are your values and principles. What do you want.
Be a great man -- someone worthy of your W to return to, should she choose to, or another woman to be drawn to.
Me: 50, MLC/WW 45 Young kids Nov 2015: BD1 Apr 2016: BD2 Jan 2017: W filed Feb 2017: D final