翻译：尽管我与他闹翻了，但自那以后，我从未说过对他不利的话。
热心网友
有两句，意思有一点点不同，第二句更接近原意：1、I speak nothing harm to him though we've fallen out at that time.--从那次和他闹翻以后，我从未说过对他不利的话。2、Although we fell out, I speak nothing harm to him from then on.--尽管我与他闹翻了，但自那以后，我从未说过对他不利的话。
热心网友
尽管我与他闹翻了，但自那以后，我从未说过对他不利的话。Though we fell out, I didn't say anything against him since then.
热心网友
Although I broke up with him, but I never bad mouth him after that.
热心网友
He and I (We) fell out, but I'd never said anything disadvantageous to him ever since.
热心网友
Though he and I fall out, but from then on, I have never said the words disadvantageous to him!