Can someone answer this for me?, please read details as it will be too long?

I just want to know after anyone i meet they tend to break my heart and feelings you know i give them what they want let them go be where they obviously wanted to be so why aree they mad at me after i let them go? obviously i wasn't enough for them but constantly time after time they are mad lol i just dont get it.
Can someone answer this for me?, please read details as it will be too long?
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