Such a tangle, isn't it? But you know what? Now YOU choose how you will react to him. He may have chosen to leave, the idiot, but now you have control over you. I know sometimes that isn't always comforting but in moments when we need our strength the most, it will mean a lot. MLC or not, they will always have to live with their choices. I would not want that on my head. To leave my family and take on an OW and her kid? Nope.
And if he is still e-mailing you for advice, he is testing you. If he cares enough to test you, he still feels bonded to you on some level. Why would he ask your advice if he did not care for your opinion? I think your response was kind but not needy. Well done!
It is difficult to move forward, I know. Even when we think that we are, when we are in the thick of things, we are not. At least that is how I feel. Come here and we'll talk you through, B. Anytime.