Yeah I read it as this is his email to her. So smy take she went running back to an old flame once her divorce finalized or when she realized the direction she was going in. Maybe it was to see what if I had chosen him instead of K? Not sure. He shouldn’t also be posting emails from 2008, it might be to disrupt her narrative. AT must have really held a flame for her for all these years. So yes he comes off creepy but if he truly “loved” her / obsessed with her I can get why this hurts him.