I'm not in a position to offer any advice - my sitch is just over a week old, and it's not going very well from where I'm sitting.
But as you said to me, there does look to be a lot of similarities, so my heart goes out to you and I'll be thinking of you in my spare moments (which are plentiful!).
The only thing I will say from your last post is that you seem to be doing what I'm doing - Over thinking EVERYTHING. I've been going back through our relationship, searching under every stone, desperate to find some kind of rosetta stone that explains everything.... I'm starting to think it's not there, and if I do too much thinking, I'll end up blaming the entire thing on that one night I did something mildly wrong 4 years ago.
I know it's hard, but don't let the sound of your own wheels drive you crazy, OK?
Stay strong mate.
Me: 29 H: 25 T:7yrs M:5yrs
Bomb: 23/04/10
Had no idea anything was wrong. Cheated so she could end it without talking.