"Do you think I should be promising I won't cheat again this early in the change?"
No because there's nothing that shows that you can be faithful. So your W isn't going to believe it.
"My therapist has corrected me multiple times when I said that I wouldn't and challenged me that I could not say never."
He's correct.
"How am I having a pity party? "
All you seem to do in your posts is write about how much you hurt your W and yet you want her and have changed, and then talked about her A (which I don't even know if I would call it that because of your numerous indiscretions). She's getting her self-respect back in the only way she knows how.
I don't know how many times I've asked for a marital history, and all of your responses have centered around your A's. Is that really all that your M was made of? Untruths, deception and abuse? Again, concentrate on the MARRIAGE.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.