Is it bad to have a crush on my professor?

So I'm 24 and I'm in college getting my master's. I have a history teacher and I think he's pretty funny. Some of the class don't catch his jokes. They're so corny and I love it. He seems so nerdy yet so professional and the way he talks and he's so interested in what he lectures about and just brims with intelligence. I feel bad that I developed a crush and he looks like that actor Keegan Michael Key. I'm not gonna try anything I have self control but he makes class something to look forward to. I feel he's an example of the type of guy I'd date.

Is it bad to have a crush on my professor?
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