When Both Partners Are Diagnosed: Understanding the Other's ADHD

My husband and I both have ADHD, but we manifest it differently. I'm disorganized in the typical ADHD way: I lose my keys, forget to buy milk, and so on. He manages his ADHD by staying hyper-organized. He refuses to learn more about ADHD and the reasons for my disorganization. What can I do to let him know that I'm not intentionally disorganized?