Can someone please read and edit my short story? Around 500 words

[RonBee]

The next thing I did was totally an accident, I swear I didn’t know it would have happened the way it did.

The next thing I did was totally an accident. I swear I didn't know things would happen the way they did.

(Say: the advice of others.)

[DouboC]

Try:
.

I don't think I can ever forget what happened, nor can I forgive myself for what I did.

First off thanks RonBee for all your advice however i have a question about taking out the "Let me tell you" part of the sentence, can you tell me why you think it would be better without it?