The Big Bang Theory cast behind the scenes is as compelling and intermittently funny as it is on the small screen. But not everything IRL is as rosy and Hollywood-happy-ending as the series itself. Previous acting roles, secret but intriguing friendships, hidden affairs, and pay disputes have been bubbling below the surface for years. And now The Big Bang Theory is getting ready to wrap up its run. So here are some of the funnest facts and juiciest secrets about the show and its stars…