I totally get what you are saying. I think we've all made mistakes at one point. You come across as such a warm hearted forgiving person who just wants to make peace with A, which is good. I've been rooting for you and him to make up or have closure even if you both don't end up together at least a friendship would be a happy ending enough.

I remember at my old job I had a friend who went through something similar. He came to me for advice since I was more experienced. He wasn't sure how to handle his supervisor who was clearly picking on him, per him. He gave me several examples and I agreed what she was doing wasn't right.

He was the quiet, humble, shy type who never had any issues with previous supervisors so I was surprised he got himself into that situation.

I advised him it can go either way, he can either put up with it or find a new job. He didn't like my choices. He said he was innocent and did nothing wrong plus he likes his job. So then I gave him another choice which can backfire. So together we decided the best way to go about it was to confront her since his supervisor was in the wrong.

I clearly told him her personality type and how this can have really bad ramifications. I told him how she hates being wrong and questioned, similar to a narcissist personality....I've taken enough psychology courses to distinguish personality types. I told him how this might hold his career back and how he will be targeted by her for the next few years. He was stubborn and didn't care.

Eventually he stood up to her and has zero regrets. He knows he was right in his mind and his supervisor probably thinks they were right in their mind.

Was I rooting for him to be right and win the confrontation? Yes, only because he never had issues with prior superior at the workplace. Anytime he had issues it was to stick up for himself. The examples he described to me were pretty shitty. I was with him all the way and so were many others.

Moral of the story is, I'm sure his supervisor thought she were right or probably didn't realize what she was doing out of how she perceived the situation.

Perception is important in every situation. There are tons of evil dictators who think their actions were legit and in the right while another group of people know what they are doing is completely wrong and possibly done out of ignorance or a bad upbringing with zero regards to other's feelings.

The perfect example is what Thanos (a comic book villain)did at the end of Avengers Infinity War. If you didht watch it, I suggest you do...it's such a gr8 flick!