What's the darkest thing you've done which no one knows about?

Not proud of this, obviously. Back in college my roommate confessed to me he was thinking of killing himself. He told me all these reasons — failing classes, no friends back home, felt like he was worthless. I sat there and told him it’d get better, gave him the usual speech. But the truth is… I was so tired of his drama. For weeks it was always about how he was gonna end it. And that night I just said, “Do what you gotta do, man. I can’t keep doing this.” He did it three days later. Hung himself in the dorm bathroom. I never told anyone what I said. His parents hugged me at the funeral. I still get nightmares.