He stares at you and doesn’t look away?

I caught a guy I’m interested in staring at me from afar, but not that far to the point I can’t tell who he was staring at. It was clear he was staring at me because there was a wall behind me. Our eyes met and I had caught him staring, but he continued to hold it. No emotions visible. I broke the eye contact, looked somewhere else and then looked back at him to find out he was still staring at me. What does this mean? He always does this

He stares at you and doesn’t look away?
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