Why do some attractive guys look so dreamy when they smile?

I visited a cafe today. The barista was a very handsome young man. He stared at me with tantalizing dreamy eyes, smile, hair blowing like a scene they're straight out of a movie.. I couldn't believe it. Just the same way another time when handsome dude looked at me with super sparkly eyes and unusually glowy face. I can't tell if they're looking at me that way cuz they're attracted to me or if all handsome guys just have a certain aura to them. Cuz I have never seen an average Joe come off this way.

Why do some attractive guys look so dreamy when they smile?
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