Hon, it IS a cause for celebration. Not because D is in this situation, not because there is a possibility that you won't be with him in the future, but because you have figured out what YOU need. We have seen you struggle over the past few weeks and we are all delighted that you have found some peace. And it is obviously the solution you have been looking for as you slept like a log.
I was wondering if you'd considered getting him admitted somewhere. I didn't want to mention it the other day as I was sure that APAS or the docs would bring it up. If he continues as he is, it might be the best option for all of you.