Would you open Pandora's Box?

Have you ever had a dynamite secret and just held it yourself? You knew that if you released this juicy information, that the effects it would have on your friend(s), would be comprimised? Like opening a “can of worms”? Would you ever tell this secret…..ever? Now is your chance to “tell it like it is”. No names or specifics, just the facts surrounding a secret that no one knows, but you. Question: What secret that you know, would open Pandora’s Box, if the truth were reveiled?