Guy squinting at me?

There's this guy who often squints at me and half-smiles/smirks when he sees me - sometimes it's to make me laugh but it seems that when he's laughing with me in general he also does it (but with a bigger smile), maybe unconsciously. I've heard it means he thinks I'm hot or wants me - ? Am I wrong? By the way, he only does it to me.
Guy squinting at me?
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