"Big Bang Theory" star Johnny Galecki gives "fake woman" Kaley Cuoco the day of her wedding

Johnny Galecki sent his "fake wife" good wishes this weekend, even though she was marrying someone else. Galecki, who plays Sheldon on CBS's "Big Bang Theory," posted a touching message for Kaley Cuoco who plays his girlfriend on the screen, Penny, Entertainment Tonight. Cuoco married his fiancé Karl Cook on Saturday

Galecki – who is not only the co-star of Cuoco, but also his ex-boyfriend of real life – attended the wedding and shared a sweet photo with the bride on Instagram. "Could not be happier for my fake wife," wrote Galecki on Instagram. The picture shows the actor and Cuoco, who is in a wedding dress, hand in hand. Galecki also congratulated Cuoco and Cook, "whose words all made us cry last night."

"So much love for both of you," wrote Galecki. He also shared a picture with the two newlyweds saying: "More sincere congratulations to the newlyweds, I love you both … I am so moved tonight."

Cuoco shared several wedding photos on her Instagram, including a photo of her and Cook laughing while walking in the driveway with their dog, after saying "yes". The bride wore a custom Reem Acra dress with what she called her "dream cape" – a lace cape draped around her shoulders.