What does it mean if girl raises her eyebrows during eye contact?

Anonymous
this girls does that a lot,she won't say hi ,she talks with her eyes or smile at me,i try to intentionally talk to her she just smiles and doesn't talk much no matter how much I try to prolong the conversation,i know she finds me attractive but is it possible to know if she interested in me not just find me attractive like just eye candy to her eyes
What does it mean if girl raises her eyebrows during eye contact?
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