One of the biggest mysteries from The Secret Lives of Mormon Wives is finally solved - PebbleGate! And it is all because of former best friends Jessi Ngatikaura and Demi Engemann's feud exploding online! During Season 1 of the show, Demi and Whitney Leavitt were at odds over Fruity Pebbles, not because they got into a whole debate about whether the cereal is good. Demi opened up to the DWTS alum about an intimate moment with her husband Brett Engemann involving Fruity Pebbles off-camera. Not bringing it up on camera obviously meant Demi did not want everyone to know about the sex confession.