How do you tell if you should open the door to forgive and let a man in your life again?

I was thinking of doing that but then I read some thing online which made me realize there’s very negative minded guys out there who would come back and pretend to change and like they care for you just to get revenge on you even worse. Revenge for cutting them off. Now I’m rethinking if I should because what if he’s that immature?

How do you tell if you should open the door to forgive and let a man in your life again?
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