Why My 304 Female Friend Won’t Let Me Go?

My female friend sleeps with so many men but with me she is so strict with me. She told me once I’m keeping you as my friend. I asked her what I mean to her and she told me I see you has a lifelong friend. She said this in front of her friend. I see she sleeps with others but with me she so strict. I asked her once if I was her back up plan she gave me the most serious stare I’ve ever saw from her. I don't know what is up with her. Does she have a plan behind all this. I’m very skeptical if it is a negative or positive agenda.
Why My 304 Female Friend Won’t Let Me Go?
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