Photo: Sonja Flemming/CBS/Getty

Johnny Galeckican’t help but look back fondly on one particular special moment fromTheBig Bang Theory’s 12-season run.
The actor, 47, and his costarKaley Cuoco— who hedated in real lifefrom 2008 to 2010 — remembered the first time their charactersPennyand Leonard Hofstadter exchanged “I love yous” during the CBS sitcom’s sixth season in Jessica Radloff’soral history bookThe Big Bang Theory: The Definitive, Inside Story of the Epic Hit Series.
“I think we knew at the time. I mean, you play these characters…but that was an incredibly honest moment between Kaley and I,” Galecki shared. “We didn’t need more than one take.”
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Meanwhile, Cuoco, 36, added that Galecki still gets “nostalgic about that moment.”
TheFlight Attendantstar echoed her costar’s sentiments, saying, “When we did the moment, it was perfect! It was literally a perfect scene.”
“But even when we do a scene that’s great, we usually always do it one more time so they have an option,” she said. “But they said, ‘We don’t even want an option.’ It was pretty cool.”
“[Showrunner] Steve Molaro or [director] Mark Cendrowski came over and said, ‘We don’t need another take unless you want one,’ and we said, ‘We don’t either,'” she added.

“I was like, ‘We don’t need to do it again! I’m ready to daaaaaance!’ [Laughs] Those were terrific memories for the cast and crew . . . and the fans, thank you very much!” she said of the flash mob.
Galecki responded, “They were, butthat’swhat you were thinking of when we had that special moment? The flash mob?” which Cuoco denied.
Over the course of the show, Cuoco and Galeckibondedand gave each other special nicknames. They called each other “Mooks” after the actor received a jersey with the name on the back. He would also call her “Stickerbell” which “she loved, because she’s evolved enough to know she’s not one,” he recalled.
Alberto E. Rodriguez/Getty; Jason LaVeris/FilmMagic

Writer Tara Hernandez remembered how the fan-favorite scene between the pair came to be after she pitched in the writer’s room.
After receiving some pushback in the writer’s room, she recalled explaining, “Leonard’s feeling insecure in that moment is because he hasn’t gotten that validation that he needs. Leonard needs to hear that vocalized or else he won’t be able to relax about this new partnership that she has.”
She added, “I remember everyone really jumping down my throat about it, like,No, we’re not there yet!And to his credit, Steve Molaro just sat with it, and was like, ‘Yeah. I think it’s time. I think it’s the time for ‘I love yous.''”
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The Big Bang Theory: The Definitive, Inside Story of the Epic Hit Seriesis available now wherever books are sold.
source: people.com