Whenever I say hey to this girl (who is my friend) she says "ew". Whys that?

I have known this person for around 5 years and we've always been cool. For every social media I'm on her private story suggesting that I'm a pretty close friend of hers. But every time I say hey she just replies with ew irl

Like what would you do in such a case realistically
and does this have further connotations
Whenever I say hey to this girl (who is my friend) she says "ew". Whys that?
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