Have I done something wrong?

There's this girl who often looks at me, and we exchange eye contact a lot, but when I speak to her she's different, with everyone else she's loud, bubbly, the life of the party. With me she barely talks, doesn't seem as engaging with me as she is with everyone else, sometimes she'll just stand there and look at me without saying anything. but very rarely she seems to be able to talk to me first, without any awkwardness. So I'm not really sure
Have I done something wrong?
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