Is jaw dropping a reliable indicator of attraction? Or can it indicate something else?

Anonymous
Basically the question. I've noticed that when I make eye contact with this guy across the room that his jaw drops a little. The first time it literally dropped all the way open lol.

Idk, the expression on his face gives me the idea that he is in shock or awe or something like that. He usually looks at the ground, unless I break eye contract first.

Is this a reliable indicator that he's attracted to me? I hear phrases like jaw dropping beauty and stuff like that all the time. Just wondering if there is any truth to that type of statement.

I've noticed that he does this, but otherwise kind of gives me mixed signals. In general when we talk he listens to what I'm saying and contributes a fair amount, but I sometimes get an uncomfortable vibe from him.. He often avoids looking at me when we are talking and seems hesitant to smile. Just made me wonder if jaw dropping could indicate discomfort or something like that?

Is jaw dropping a reliable indicator of attraction? Or can it indicate something else?
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