Your friend Ava told you, just you, that she still wets the bed sometimes and was really embarrassed about it. A few days later, you were annoyed with her during an argument, and it slipped out — you said it in front of two other kids, just to win. The words were barely out before you saw her face. The other kids went "ew" and laughed. Ava went white, then walked off. You used the most private thing she'd trusted you with as a weapon, because you were cross. Now the argument doesn't matter at all. What you did with her secret is the only thing that matters.