Things they told you in trust don’t become ammo just because you’re mad.

Information given in confidence does not change ownership when the relationship turns difficult. Using it in an argument works precisely because it was never supposed to be available, and that is exactly why the damage is permanent. Anger explains the impulse without licensing it. What you do with what you were trusted with decides whether you can be trusted again.

When a fight escalates and you find yourself reaching for something private, stop there. Argue about the actual disagreement instead. Anything you win by opening that door costs more than the argument was worth.