以下是一些类似于“一次不忠，百次不用”的英文句子：
1. Once a cheater, always a cheater.
2. Trust is like a mirror, once it's broken, you can never look at it the same way again.
3. Fool me once, shame on you. Fool me twice, shame on me.
4. Betrayal can never be undone; only forgiven.
5. Actions speak louder than words. A leopard cannot change its spots.
6. The trust of the innocent is the liar's most useful tool.
7. If someone shows you their true colors, don't try to repaint them.
8. You can only push someone away so many times before they stop coming back.
9. Cheating is a choice, not a mistake.
10. Deceit fills hearts that are empty or broken.
一次不忠，百次不用 ,社会诚信失去,很难东山再起.
