Old relationship drama into a new relationship?

Is it okay to mention previous problems that were happening in your past relationship(s) to your new partner?? I was talking on the phone tonight with my man, we’re three months into our relationship and the topic brought up a question that he asked me on my previous relationship asking why it had ended. Why my last relationship ended was because I had cheated on my partner.. I didn’t tell my new partner that reason but I glazed over other issues that were then happening. I’ve learned from my previous mistakes and I don’t want to be reminded of what I did in the past, so that’s why I want to know the opinions of others if it’s ok to mention that sort of information to your new partner in the new relationship...😥😓