He may really love you. Some people are just difficult. And of course things are tough for him with all the medical conditions he is dealing with. He is lucky you love him. He needs more care than one person can provide. Remember how hard it was to deal with him alone. Unaluna is right--he needs to go into a nursing home. You can keep visiting him and if he gets abusive then you will be able to leave. Reread all your posts -- you are already in bad shape because this has been more than you can handle. Please put yourself first, you may have many good years in front of you to enjoy.