The past doesn’t exist anymore. It was a fleeting moment that for a second was the now. It turns into a story we tell ourselves through the lens of our imperfect memory and our biased feelings.
Does it make sense to keep reliving it? to keep replaying the suffering that is no longer there? I don’t think it does and even though it’s difficult, the practice of letting the past be is one of the best things we can do for ourselves. Accept and move on.