<human>: Can you succinctly summarize the text in 1-3 sentences?

He and I have been seeing each other for a while, but we've only been exclusive for a few weeks.
He flat out refuses to take off his hat, and won't give me a straight answer when I ask him about it. I asked him if he's doing it because he knows I'm curious and it's driving me a little crazy, or if he's afraid to take if off for some reason and he responded with, "I'm not afraid of anything."
Preemptive answers to some questions:
No, he's not balding. I can see the sides and back of his head and he has a buzz cut.
No, he doesn't have a receding hairline, I can see the tip of his hair coming out where his hat meets his forehead.
Yes, I've forcibly taken it off once. He basically held my head down so I couldn't see and he acted upset after I gave it back to him.

Do any of you have similar experiences? I'm just wondering what could explain his weird behavior.
<bot>: I've never seen him without his hat and he won't give me a straight answer as to why he won't take it off. Help?