I wouldn't do it, even from a non LoA perspective.
Lately, I don't see a reason to think about the past, because it's gone anyway. You can think about beautiful things from the past of course and attract similar things into your future. But why would you think about bad things in the past? You are wasting your present moment with it, you are wasting your creative power you have in this present moment and you manifest things in the future you don't like. You can't see your past, so you can change it. Just start to tell you a different story in which all this things have never happened or in a more positive way. In the end, you maybe even forget about the old version of your story and you don't feel a need to talk about it anymore.

Glad it helps you.

Fear is a strong signal that your thought is out of alignment. It's your Inner Being telling you "no no, that isn't a good idea". So better listen to your Inner Being to other people. It's much wiser than people who are (mostly) out of alignment with their own truth.
And you actually do know why he did it. He responded faithfully to your vibration. That's the only reason for everything. There is no other cause than your vibration. So it would be more beneficial to ask yourself where you vibrated and how you can change that for the next time. Or you just drop it completely and focus on thinking the right thoughts.

You are lately one of the few members I feel can do it. So don't let stuff like that affect you and stay focused. You got that, I'm sure.