I'm new to this. I don't know very much, but I have been in a failed monogamous marriage. It sounds to me like he is not putting any effort into your marriage, and that he has no plans to put any effort into your marriage.
Two of his three options involve not being with you and he sounds fine with that. I hate to say this and I'm sorry, but it sounds to me like the marriage is over. It could maybe be fixed with therapy, which I highly recommend, but you can't make another person willing to work on it.