Not exactly "down" I guess, but mired in thought. I am with you in that I'm still thinking about it all the time.
I think part of me still feels like there is something to do. I do want to still call XW and - I don't know - get it right somehow. I wanted to call her last night, I wanted to call her this morning. But I don't know what to say now, and there is no real purpose for it. Yeah, when I think about it too much I want to cry; literally - I can feel it bubbling up. But, for the most part, I am OK.
The habits, instincts, to still engage XW in some sort of productive way are still there, but there is nothing to say or do now. We used to be good at being married. But now it just leads to trouble. I guess that's why trying to enbrace the thought that I am single helps me.