Is my best friend falling in love?

My best friend calls me 'beb,' 'hun,' and 'babe,' even though we're not dating. Once, I posted a meme saying that a friend who can't kiss you is a fake friend. Jokingly, I asked her for a kiss, and she reluctantly gave me a 5-minute kiss. Does this mean she's in love with me, or is she just being overly friendly?
Is my best friend falling in love?
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