I have seen spoilers and want to read the novel, so I am very excited for the coming chapters.
I am not even sure what I would do in his place. I would probably be similar to him. First wanting to leave if I could. After hearing what is said this chapter,
I would probably despair too. Not knowing if your loved one is there. If they lived for decades before you came, dying without ever knowing.
It might be enough to not push away comforting warmth. Staying will be easier once you have come to terms with that. Especially when you cannot leave.