Why is my fianc angry at me about his automobile insurance?

My fianc and I recently had an argument over finances. He gives me the money each month to pay his automobile insurance. He no longer has one of the vehicles on the policy. He realized he was still paying for the coverage and asked why I was allowing him to continue to do that since I was physically paying it for him. My response was that he was giving me the money, and I just made the payment. I didn't think of the coverages. He was angry about it. I still can't figure out that anger.