Is this a creepy thing to say?

I had a man come in the store I work at today. He is staring and smiling at me but I ignored it. After I finish his transaction he’s still smiling and is like “are you even old enough to be working here?” In a nice way And I told him I was 21 and he was like “you must get carded ALL the time” and I was like “No I don’t rlly drink” and he was like “that’s like my daughter she’s 26 and always gets carded but you look so young” and he was still looking at me and smiling. Was this creepy?
Is this a creepy thing to say?
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