My date/hook up checked my LinkedIn before meeting up why?

The thing is my hook up was secretive about his last name and when I asked he laughed it off saying it was a secret. But he right out said he knew my last name because I came up on his LinkedIn and he said he had viewed my profile. He even whispered my full name to my ear. Isn’t it a bit creepy to check someone’s LinkedIn if you only want to hook up with them?

My date/hook up checked my LinkedIn before meeting up why?
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