That SINKING, "Oh SHIT!" moment.  Happened to me when I told a friend, who worked with my wife, that I knew my wife was having an affair with their boss.  She responded, "Oh, you KNOW??!?"  No, I didn't then -- but now I do! My world dropped out from under me.  "Nothing Else Matters", eh?  World Gone Wrong, then.  Concrete Blonde even wrote a song about her, but I let her live (like I really had a choice; raised right). That was the most shocking betrayal; I experienced physical symptoms.