I know exactly how you feel as I am dealing with pretty much the same issues. The crying is a release of the sadness and frustration that we feel at having to do things that we never thought we would have to do.
Being deserted by the person who meant and possibly still means the whole world to us is not easy. I am hoping that by the time my 2 year mark rolls around that I will be able to handle this in a better manner, but who knows. I am really struggling for the past few weeks.
The tears are starting as I write this to you because we have pretty much made this whole journey together.