A friend’s secret is a loan, not a gift. You don’t get to spend it.

Being told something in confidence puts you in temporary custody of it rather than in possession. The pull to share is strong because a secret carries social value, and that value is precisely what you are giving up by holding it. The cost is the point. That is what the trust is actually made of.

Notice what you would be buying with it the moment the urge to repeat something arrives, then decline. If you need to talk about it, talk to the person who told you. Hold it until they release it, which may be never.