Why do some girls get mad when a guy moves on, EVEN though YOU were the one who did not return his texts?

Depending on how much the girl knows or is interested in me, sometimes I don't assume a girl is not interested when she does not text back. Usually however, I tend to feel like she's not interested, so I move on to another girl and then she gets all hurt and her friends don't like it either EVEN though SHE was the one that kept ignoring my texts.
Why do some girls get mad when a guy moves on, EVEN though YOU were the one who did not return his texts?
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