Why didn't that conversation take place before breaking up?

Edit - a word

Many have, but that's beside the point.

If you want to be better, do so, but not for her, she's already made a decision; do it because cheating on your partner is shitty. She doesn't have to stick around waiting for you to prove that you can respect her - she can be single or find another man who will, someone who won't break her trust and then try to prove himself.

Well, man, words are easy. Saying she's the love of your life (do you know how many times do we read that on posts about people who've cheated on their partners?) and how she deserves lotalty means nothing when your actions showed her otherwise. That was the disrespectful part, how you'll behave in future relationships won't affect her.

You let her go. You messed up and intended to cheat in some way, even if you didn't get to do it. You got back together but she realized she couldn't trust you the same way she did before, and you telling her you've been nothing but faithful wouldn't change anything.

Let her be happy. You had your chance but the ship has sailed. Hopefully, you'll learn a lesson with all of this.

Same! El viaje de Chihiro in Spanish.

Wow, impressive! And TIL the film is called Spirited Away in English.