I like a younger guy who is my coworker, how can I not like him?

I don't know if something wrong with me that I like an 18 year old when I am turning 30. I don't think this would happen to me since when I was young, I don't want to date younger guys. Even if he is my same age no, so like if a guy is a day younger than me, I didn't see him as man

I like a younger guy who is my coworker, how can I not like him?
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