Oh my gosh, I am so sorry you are going through this, dear Lost.
s
I don't think it is codependent to miss someone you have loved very deeply. But it is pretty clear that this man is doing a good job of blaming you for things that are not even a little bit your fault.
His behaviour is reprehensible—and he is living in his addiction with a (very temporary) partner who is using with him—that's what she has. And you don't want that in a million years.
s