I love the advice that 25, SD.wifey, Coach et al gave you. And I am taking it for myself. Responding in your usual way shows that you have not changed the dynamic.
I love how SD maintained her cool when she found the letter. I am NOW after a few months of DB truly learning the value of doing this. It is all about change, change, change. But it is easy to slip back into same , same, same when under pressure.
And, as one smart writer said "Your marriage is in ER. The first rule in ER is to remain calm and stabalize the situation."
I am beginning to look at my sitch as a big fire. It can be brought under control. Will I be a fireman with a hose or will I pour gasoline on it? These images are helping me whenever I want to say or do something that I already KNOW I will regret.
You can do it, Beepee. Look at how many of us you have with you.