Kaley Cuoco and Johnny Galecki

Actors Kaley Cuoco and Johnny Galecki co-starred together in the hit CBS show The Big Bang Theory. They began dating in 2007, right after the series premiere. The couple’s relationship was going great, especially when their characters Penny and Leonard’s plotline started heating up. Unfortunately, in December 2009, the couple called it quits only after two years together. Though things didn’t work out in the long run and had to stop, the characters they played in the show had scenes that were still hot and heavy.

Even after breaking up, the actors remained professional and made sure to avoid being awkward around each other. They went on to continue filming and maintained a great relationship as good friends until the recent end of the long-running sitcom. Credits to their extreme professionalism! “We’re dear friends, still. Kaley’s not just an ex, she’s a part of my life. I just don’t like to speak about it.” Galecki told CBS!