David Oyelowo Recalls Filming with Kaley Cuoco Before She Announced Pregnancy: 'I Had to Keep This Secret'

David Oyelowo, Kaley Cuoco.Photo:Ethan Miller - Formula 1/Formula 1 via Getty, David Livingston/Getty

Ethan Miller - Formula 1/Formula 1 via Getty, David Livingston/Getty

Outside ofKaley Cuoco’s immediate family,David Oyelowomay have been the first person to know the actress was pregnant.

While attending Club SI in Las Vegas for the F1 race on Friday, Oyelowo, 47, spoke exclusively with PEOPLE about his upcoming film with Cuoco,Role Play, which is set to be released on Prime in January.

According to the actor, when the duo filmed the movie, Cuoco, 37, hadn’t told anyone she was expecting, but the signs were there.“We were doing this scene in a hotel, a disused hotel, which you could tell had been disused because of how badly it smelled. For anyone who’s been around someone who’s pregnant, their sense of smell goes through the roof,” Oyelowo explained. “She was just nauseous with the smell of this hallway. So every time we would do a scene, and we would call cut, she would say, ‘Can you smell that? Is that bad?’ ”Oyelowo then noted thatThe Big Bang Theoryalum would actually spray perfume on her hand to smell that instead, and though he initially thought Cuoco’s actions were “weird," he then wondered if there was something going on.“It got so weird that she had to eventually tell me that she was pregnant, and then I had to keep this secret," he said. “So that’s something that probably shouldn’t have happened but did, and was very funny.”

Kaley Cuoco, David Oyelowo.REINER BAJO / PRIME VIDEO

REINER BAJO / PRIME VIDEO

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories.

Cuoco and fiancéTom Pelphreywelcomed daughter Matilda earlier this year on March 30.

The couple announced their firstborn’s birth on April 1, calling her the “new light of our lives” alongside a set of family photos shared onInstagramat the time.

Remembering the moment when Cuoco told him that she was expecting Matilda, Oyelowo said he was filled with emotion.“She told me this, and I started crying, and it was completely inappropriate given the scene,” he said. “It was meant to be a scene in which I definitely wasn’t supposed to be crying.”“She’s a great human being,” Oyelowo added of Cuoco.

Kaley Cuoco and daughter Matilda.Kaley Cuoco/Instagram

Kaley Cuoco/Instagram

Oyelowo also detailed his first experience meeting Cuoco, telling PEOPLE, “She presented me with 20 questions that I had to give the answers to so that we knew each other instantaneously, and we had to ask each other these questions."

source: people.com