Boyfriend gets upset when I compliment celebrities

I saw an interesting question on another forum, I have copied and pasted it below. What do you guys and gals think? It's an interesting one. Do you think he's insecure?

"I have crushes on some celebrities and one of them is Ryan Gosling. For some reason when I compliment him (for example I would say his sexy or hot as he is handsome and does have big muscles), my boyfriend has a little sulk about it.

I don't get it as I will never even meet the guy and I do love my boyfriend. He won't even watch fall guy with me (the film Ryan Gosling is in). But I feel like I can't talk about some things I like as my boyfriend doesn't like hearing about Ryan and it really annoys me when he does go into a little sulk about it.

Do you think my boyfriend is insecure or am I missing something?"