JFun, Your sitch sounds really tough - a lot like FY's sitch. You both have to deal with this MLC stuff every day.
In contrast, my wife moved out five months ago. In some ways, this made things easier, because I am never walking on eggshells in my own house.
I am the master of my domain. I have the luxury of deciding when and if I see my wife at all. And when I do see her, she is happy to see me. She hugs me.
On the other hand, she filed for D, so it becomes more and more likely that she's never coming back. Which makes me sad a lot of the time. And lonely.
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So, it is tough for me to try and help you. But what do you think about trying a 180.
Have you two been out on real date lately?
Why not try something totally new, something that you have never done before? Go out to breakfast (without kids) and then to the art museum. Or go to a weird old foreign movie and eat after at an all-nite diner. Anything that is outside of your typical comfort level. An art gallery, and a then a cocktail at a hipster bar.
Something you can observe together that is outside of your normal existence will give you something neutral to talk about. It might also make her think there is something to you she doesn't know about yet...
Me:52 Wife:49 Married 19 years Son:16 Daughter:14 Bomb dropped with ILYBNILWY: May 2013 Wife moved out 2Jun13