If a cheater begs to be taken back isn't that manipulative and selfish?

It happened to my older sister. It's a good thing she slammed the door on his face and blocked him. She hasn't spoken to him in over 4 years.

But he was begging to be taken back (bombarding her email, cell with calls, texts, etc), even came to her house with her favorite flower (Carnations) and shoes. She actually was offended that he put all that effort only to be taken back and never did that during happy moments in their relationship. She didn't understand why it has to take cheating to do that.

Seriously if a cheater continues begging for another chance, to be taken back isn't that already being manipulative and selfish? They're only thinking of themselves at that moment and not the ex partner's feeling, what the other person actually wants.

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It's ok an ''ok you want to be taken back but what about them, you're not letting them decide... let them choose what they want without begging''.
If a cheater begs to be taken back isn't that manipulative and selfish?
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