Just wanted to say that, given what you have been going through, you might find some solace in reading the following thread. My sitch is similar to yours, and I have found this thread to be a life-saver.
It's in piecing, of all places.
Because, despite the extremity of her partner's mlc, he came back - eventually.
BUT, as she documents in painful detail, there often seemed to be absolutely no hope along the way, although he kept wanting to maintain contact.
Anyway, have a look at AliSuddenly's story (warning, it's a long read with multiple threads):
