How ‘The Big Bang Theory’ Cast Found out Johnny Galecki, Kaley Cuoco Were Dating

While filming The Big Bang Theory, stars Johnny Galecki and Kaley Cuoco did allude to their real life relationship. That is, once everybody else on the show found out. They kept their dating secret for as long as possible. Looking back after 15 years, they and their co-stars shared how they managed.

Galecki and Cuoco shared how their crush turned into an official relationship in the book. At first, Galecki wanted to keep their relationship private from the Big Bang Theory cast and crew.

“It’s not like we could make the excuse we were going to one of our rooms to rehearse because everyone knew I didn’t rehearse,” Cuoco said. “They wouldn’t believe that. They’d be like, ‘That doesn’t sound like Cuoco!’”