Why do you think he kept looking down at his pants while I was caressing his chin?

Okay today while I with the man I have feelings for, I started stroking his chin and caressing it, and kept looking down at his pants and lifting up the food he had on his hand while I was caressing his chin. Why do you think he was doing this?
Why do you think he kept looking down at his pants while I was caressing his chin?
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