Does prolonged eye contact mean attraction?

Most of the time, it's what his face is like, right? But what if you are just a shy person and aren't good at noticing the little thing.
Also that people know that you are a shy person so they see that you don't react to their kind of reaction towards you..

I just want to know how you would let them know with intense eye contact or prolonged eye contact.
Does prolonged eye contact mean attraction?
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