Val, Don't beat yourself up for not "seeing" things more clearly earlier. Regardless of what you call when he is going through, he is clearly not of sound mind. YOu were simply holding out hope that he would get himself the help he needed and get back to his old self. There is no shame in that. Just a lot of love and support.
At this point, he is really out there, so you need to move on. But you can go to sleep at night knowing that for better or worse, in sickness and in health, you stood by him until there was no more standing you could do.
I fear for him. I really do. I hope he gets help.
Married 9 years Kids 5 and 6 Bomb 2006 H back and forth for a year M now back on track