Weird Secrets Of The Big Bang Theory Cast That Shook Us To The Core

For 12 seasons, The Big Bang Theory was one of the most popular shows on network TV. The CBS sitcom followed the lives of four scientists and one of their neighbors, Penny (Kaley Cuoco), and it soon became an even bigger ensemble as the characters found love. However, there was a lot of love behind the scenes, as well, including the castmates who dated for two years without anyone knowing.