Am I Being mean?

I found a guy to be very hot physically but I had no real mental attraction to him. It was all just lust. He assumed that I had a crush on him when I didn’t. He started paying me all this attention as if I liked him. At first it was pretty good but then it just got overbearing and it just made me feel uncomfortable. So now I’m lying to him that I am getting married so he won’t annoy me that way anymore. Now he avoids talking to me.
Am I Being mean?
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