I can relate to your post...I am so sorry you have to go through this.
When nothing changes, nothing changes. What do you think you should do?
I know how hard it is to "leave" because you feel like you're giving up completely on them and you feel like if make that choice it means you don't love them.
It's incredibly hard...especially since even when you think about what you need to do, you're torn because in a sense you loose because you love this person. But do you feel loved?
I know I didn't, even though I knew it was the disease that prohibited my A...and I kept justifying his behavior because of his "issues" but at some point its no longer a valid excuse. Did he even ask you about the funeral or offer you support? I hope so. Everyday is hard to not contact, but that's route I choose. Until I hear "I'm in recovery".....Its painful, either way I know.
Hang in there! We're all here for you. Maybe he will choose recovery. Maybe not...but its clear to me that you are in pain while he makes the choices he is making.