Telling a friend’s girlfriend that he was doing much more serious drugs than she was comfortable with.

This did kill their already strained relationship (They were broken up after he had drained their joint bank account with pay-per-minute online porn) but somehow my friendship with both survived for a few years after.

They never got back together and his life went to shit, including some jail time for embezzlement.

She, as far as I know, bedded the next guy to hit on her and had a kid. I hope it worked out as she deserved better.

My other friends had always hated her, and loved that I had driven a wedge between them… until they found out that I essentially outed them for giving/selling him the drugs.

Following that, all my friends knew where I stood, and those who distanced themselves from me… I knew why. One of them, more than a decade later, is in prison for murder after selling fentanyl-laced drugs and causing a fatal overdose.

Several I am still close with. They know me, respect me, and understand that I will do the right thing, even if I am not the wronged party.