I haven't kept up lately, but it sounds like things are pretty much the same, except as you say, the anger doesn't last as long each time you have it. I think I know what you mean, although my experience wasn't as long or as severe as yours. But we did reconcile and try to pull the skin back over the wound.
This morning my H woke up at 5:30, dressed and came over to my side of the bed to kiss me goodbye (a habit that we deliberately developed in the post-affair marriage). And since I had just gone to bed, I was thinking, he could stay and have sex before he goes. But he said he had things to do at the office. And I couldn't help but wonder if there wasn't some early-riser woman he might be meeting. But then why leave me, the still awake night owl, to go meet early-riser woman? So I decided to not bother trying to sleep anymore and went into the kitchen where I saw that he had helped himself to the coffee I had made and a piece of fresh blueberry cobbler. And I thought, don't be silly, he didn't leave you and drink your coffee and eat your pastry to go meet a lover. I think I will never lose that thought although I can't imagine him doing it again.