How can you tell a woman is flirting with you?

I'm down south which makes it even more confusing, because almost everyone calls you some kind of pet name for no reason but it's the south. But I was told that I get flirted with a lot by my friend and I swear I don't believe it. Unless it's just BLATANTLY obvious I don't agree. So how can you tell a woman is flirting or not.
How can you tell a woman is flirting with you?
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