What are the reasons you avoid your ex-crush, who you really loved, like never met ever in life, even if you are single?

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The guy just hates me to his core for rejecting him despite several years has passed.
He now treats me the same way I used to treat him and is not even willing to hear my side.
What are the reasons you avoid your ex-crush, who you really loved, like never met ever in life, even if you are single?
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