Why did he look at me during vollyball match?

Today I went to see volleyball match between my department and other department. And one junior from my department who is also player keeps looking at me or around place where I was sitting during game. We had some talking stage which ended and it's been almost three weeks. Why did he keep looking at me?

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1 y
And he has a girlfriend who is in another college
Why did he look at me during vollyball match?
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