I would add, I am much happier when I don't try to read peoples' minds.
I mean, I get it. Breaking up is difficult and inevitably comes with these kinds of questions. I've broken up with people before and there are always questions that are unanswerable.
Give it time, lots of self-care. I had to get outside and walk with my headphones on when my mind started spinning in the early days.
((hug))