I mean if he wants to be alone let him, really its the ghost being unreasonable he stated at the start he wanted to be alone he went along with her schemes but now he wants to return to the state he is most comfortable in
It's easy actually, people don't want to feel guilty and if we associate with someone and can't do anything to help them, we feel that but that is just plain satisfaction. But isn't satisfaction what all people desire?
people out here forgetting the protagonist is also a character with their own feelings. I hate the fact people jump on the guy for not liking girl "x" or girl "y" when its obviously shown about that guy's current feelings and character at that time. your best girl aint gonna win cause shes your best girl.