Does anyone else get shy around their husband in regards to sex?

I don’t know why I do this but every time I want to initiate sex, I’ll be bold and confident, until my husband looks at me and reciprocates and then I get shy and awkward. I have no idea why I do this. We have no issues in the intimacy department at all. He’s phenomenal. We have a deep emotional connection, we’re doing really well in every sense, and we’re best friends. But for some reason I just get so awkward and then change my mind. What is wrong with me 😭😭? I always tell him it’s because he’s hot and I have a crush on him (like we’re teenagers again lol) which is partly true but I honestly don’t know. Any ideas? I’m sure this sounds immature but I’m serious. I wanna stop being so embarrassed.