What does it mean when a guy rolls his eyes at you?

Anonymous
2 months ago I stopped talking to this guy I was back and forth with for 2 years… I blocked him and changed my number… The other night I went out to the bar and he was there… my friend said as soon as we walked in he rolled his eyes at me, and that she saw him frequently staring at me all night…
What does it mean when a guy rolls his eyes at you?
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