Why was my crush looking at me smiling as I leave while his friend was talking to him?

So we had work meeting today literally everyone came in.

I saw my crush and sat a desk away and he kept looking and we met eyes once and his face was blank normal and mine to. I looked away then someone alarm on His side went off and i looked at him smiled 😂haha and he was properr smiling so cute i was smiling at him to

Before i left for toilet i looked back and his mate was talking to him normal face and crush was talkin to him to and but looking and smiling in my direction loooked proper happy and i came bavk and then when he left he looked at me once but this time no smile i didn't CUZ I COULDNT REACT 😂 fs i shouldve said bye plus my matee sat next to meeee uh she knows i like him so

Why was my crush looking at me smiling as I leave while his friend was talking to him?
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