Cuoco, 33, and Galecki, 44, play Penny and Leonard, respectively, on the hit CBS show, who ended up getting married in season nine. In real-life, Cuoco and Galecki actually secretly dated from 2007-2009. Cuoco dropped the bombshell in a 2010 interview with CBS Watch! magazine.

When did Penny and Leonard first get together?

They took a few big leaps in season one, from the moment they first met, in the pilot, to their first date in the season finale.

Did Penny and Leonard date in real-life?

Cuoco, 33, and Galecki, 44, play Penny and Leonard, respectively, on the hit CBS show, who ended up getting married in season nine. In real-life, Cuoco and Galecki actually secretly dated from 2007-2009. Cuoco dropped the bombshell in a 2010 interview with CBS Watch! magazine.