7. Kaley Cuoco and Johnny Galecki dated
Kaley Cuoco (who plays the role of Penny) and Johnny Galecki (who plays Leonard) had a secret love affair for two years while they were filming the show. Galecki spoke fondly of his co-star in an interview featured with the Daily Mail.
The former Roseanne star stated how he and Cuoco are “not just” exes but are still “dear friends” and a part of each other’s lives. He also admitted that he and Cuoco decided to keep their relationship secret due to the on and off again relationship of Penny and Leonard on the show: they did not want to confuse or distract their fans.
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