What should I do, what does this mean?

There’s this girl I work with and her and I were talking today and throughout the shift we just continued to talk and she made me laugh a couple times and I did the same to her to the point where she kept looking at me facing towards me even teasing me telling me I broke certain things when I didn’t. She said that she remembers I was the first person she saw when coming in the day of the interview and before leaving today she said bye to me and didn’t seem like she said it to anyone else. What does this mean and what should I do?
What should I do, what does this mean?
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