Normal? No. Probable? Yes. You see, we codies become as sick as the addicts themselves, we live in the state of denial. We truly believe that we can fix them, and, that we are the only ones who can do so.
Is that true? No, we neither have the skills nor power to do so. Yet, we do not want to admit that we are powerless, we cannot face reality. That is a benchmark of our illiness, facing the truth, admitting that we cannot control or cure another.
Sometimes in life, we need to take a step backwards in order to move forward. At least you have a safe place to go in order to regroup.
By what you have written, it would appear that you have already made some bad financial decisions, may be time to take the focus off of him and place it on you, to develop some skills in the money management area, so that you will not need to depend on a
man for your financial security.
As for the duplex, for the short term, possibly you can get a roommate to share the rent.
Keep posting, it will help.