French phrase
Vous avez trahi ~ !
Meaning
You betrayed ___!
When to use it
A strong accusation of betraying someone's trust. It conveys personal hurt and serious damage to the relationship.
Example dialogue
Vous avez trahi ma confiance !
You betrayed my trust!
Je sais, j'ai eu tort, pardonnez-moi.
I know, I was wrong. Please forgive me.