Why do girls give second chances to guys that treated them like garbage but guys who treated them good?

So in her previous relationship she was sexually manipulated and often pressured into doing things against her will she ultimately broke up with him and later found out he married the mother of his child. She begged him to come back even offering to be his sidekick. I treated this girl great even though I was verbally and physically abused. She broke up with me when I finally stood up to her abuse she cut me off and made no attempt to ever try to date again

Why do girls give second chances to guys that treated them like garbage but guys who treated them good?
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