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Johnny Galecki at Kaley Cuoco and Karl Cook's Wedding

Johnny Galecki Gives the Sweetest Shout-Out to His "Fake Wife" Kaley Cuoco After Her Wedding

Johnny Galecki and Kaley Cuoco aren't just friendly costars, they're also friendly exes. On Saturday, The Big Bang Theory actor was one of the many guests at Kaley and Karl Cook's wedding, and he made sure to congratulate the couple after the ceremony on Instagram. After posting a funny photo with the couple (where Kaley was cropped out), Johnny took a more serious note with his second post. "Couldn't be happier for my fake wife @normancook and @mrtankcook whose words brought us all to tears last night," he captioned a sweet black-and-white photo of him and Kaley holding hands. "So much love for you both."

While Johnny and Kaley's characters, Leonard and Penny, got married during season 10, the two also had an offscreen romance. The costars dated for about two years before breaking up in 2009. Despite their split, the pair have remained close friends, as evidence by Johnny's recent post. If you think these photos are adorable, be sure to check out all the photos from Kaley and Karl's nuptials.

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