Is this girl interested in me?

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11 mo
Kinda shy girl at work, we've talked a bit but nothing too big.
When she passed by me today, I noticed she tried to make eye contact. I looked back and looked away, and then noticed she was still looking and started smiling. I looked at her again and smiled back, then she kinda looked away and kept smiling. What do you guys think :p
Is this girl interested in me?
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