Why do guys get so mad when you turn them down?

i mean like, a few guys were hitting on me, and just getting carried away with messaging me. so I said I'm not interested can you please stop ? they freaked, they all went from calling me so cute and adorable to an ugly **** and that I was fat and that I was raised badly.

like wttffffffff.
Why do guys get so mad when you turn them down?
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