Why do people always remember my face?

I hadn't been to a place for like a year and the lady was like 'Oh! Hello you haven't been here for sometime' it's not like I went to the place everyday maybe I'd go once a month. Someone else was like 'I saw you at that birthday party' I never even spoke to him and I didn't even see him, and he didn't remember seeing my sister and she was there with me the entire time.
Why do people always remember my face?
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