What does it mean when a girl calls you "my boy"?

This girl and I have become close in the last couple of weeks, anyway we were at a night club and I snuck off for a few minutes while she was having a good time with her friends. I bumped into someone I knew and started talking. So found me again and then she said to my mate" I couldn't find my boy but found him now". She sends me kisses in text etc. we have been out quite a lot lately.
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She also told me to text her when I get home and she puts her hand on my knee when goes to stand up while I'm still sitting down.
What does it mean when a girl calls you "my boy"?
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