Guys, if you stared at a girl like this what would you be thinking?

I'm walking home and my neighbour comes out to get to the trunk of his car and then stops to touch his hair, thats when he notices someone walking by and turns around to look at me. So when he looks he almost smiles but not really. Its kind of like a corner smile that you can't really say is an actual smile.

He looks at my face and then down to my body, like head to toe. By now he's fully turned around facing me. At this point I get shy and look away to my left, he carries on staring for about 5 seconds until he finally turns around and gets back to what he was doing.

What would you be thinking?

I dont think im attractive, and this guy has known me since I was 5 but we don't talk anymore at all because his mum doesn't like us lol
Guys, if you stared at a girl like this what would you be thinking?
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