Here is what I know at this moment: I believe in the man I married. What does that mean, I ask myself. Hmm... I believe deep down he's not gone or permanently changed into a different person. At his core he is kind, loving, generous. He is not sure who he is—I think his sense of self has never been strong. He is trying, for the first time, to find out who he is. When I married him I meant it to be for life, and I still believe that. Neither of us knew how to nurture our relationship long-term, or how to grow in it.
To quote from the Last Jedi- Luke said to Leia, “No one is ever really gone.”
But H might be a new person with bits of his old self. That’s how I see it lately. The alien may leave one day but something inside him will be different. Good or bad, or a combo of both.