You see Myrrh, you have a good start on the path already.
You have recognized your contribution to the circumstances of him leaving and he has recognized his. Your admittance is the key because now you can go back, see what YOU had done to not make things work, and not do them anymore. My W, as of yet, has not provided that luxury for me. I have let her know my admittance, but still have not received any ownership from her. So I am still on the road to Piecing by myself.
Acceptance when hurt is involved is not easy and very few people are willing to subject themselves to this path. But unfortunately, this is the path that needs to be followed and it sounds like you are more than ready to walk this path. But don't think you are walking the path alone. You have many fine people, including myself, on that same path.
We are right there with you if you need us, every step of the way!
Triple J
Things were different then. All is different now. I tried to explain, somehow..........
Eddie Vedder (Pearl Jam)