I believe Homer would suggest saying something like this: "I would have preferred to save this marriage [at least for the kids?]. But I see now that you are right, that is impossible. I will work with you to make this as easy as possible."
We'll see the results of this together, since I said the same thing to my H a couple of days ago.
I have to say, so far it's going right by the book. The hardest part is not responding to his pursuing. There is a difference in his attitude already, so we'll see.
I thought your e-mail was perfect & I think Nomo's right, it doesn't surprise me that his initial reaction wasn't positive.
The fact that I'm hardly ever home while my H is here, or on my way out the door, seems to be troubling him, as it appears that I'm moving on.
Looking forward to seeing how things unfold for all of us.
