Girl sent a selfie of her biting her lip. Does that mean anything?

Anonymous
So I have been snapchating with this girl that I'm close with. I think she knows that I like her and she might like me back but i dont know. Anyway she sent me a lip bit selfie for the first time. She usually sends cute selfies and sometimes her tounge sticking out. But does her sending me a selfie of her biting her lip mean anything?
Girl sent a selfie of her biting her lip. Does that mean anything?
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