Who were the first to discover Monica and Chandler's relationship?

Joey

Which Native American staple food was ground into flour and used for bread by Pilgrims? Who was the voice narrator in the 2000 live-action film 'How the Grinch Stole Christmas'? What kind of mammal is a blue whale? Which country built and operated the supersonic Concorde aircraft along with the United Kingdom? What is the fictional language spoken by the Sims in the game series 'The Sims'?