Is 37m a red flag for liking me 21f?

I’ve always been told I’m very attractive. My face in particular is a trait I’ve been praised for a lot. Getting attention from men isn’t new to me but it’s very excessive after losing a ton of weight and going to the gym. I get hit on by very young men and men who could be my great grandfather. I can tell that this specific man is interested in me, and I really like him. He has never been married and doesn’t have children. He looks a lot younger than 37. A Is he a red flag for being interested in me?

Is 37m a red flag for liking me 21f?
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