Olivia Wilde on Directing Fiancé Jason Sudeikis: 'It's Really Amazing to See Him Do His Thing'

The couple, who share daughter Daisy, 2, and son Otis, 4, worked together on her directorial debut, Booksmart

Jason Sudeikis is not only Olivia Wilde’s fiancé, but he was also her employee after he was cast in Booksmart, a movie which also marked her film directorial debut.

According to Wilde, her man was perfect for the part.

“That was great,” she told PEOPLE of working with Sudeikis, 43. “He’s one of the best improvisers in the world so I knew I could cast him. He’s like spinning a top and just letting it roll. It’s really amazing to see him do his thing.”

Wilde’s film, which comes out May 24, is already receiving positive buzz and feedback since its world premiere at the SXSW Film Festival in March.

“I was nervous, for sure, because it’s nerve-racking to take something totally personal and put it in front of the world, but I feel excited,” she said while attending CinemaCon in Las Vegas. “The early response has been very positive. People are enjoying themselves and that’s why we did it. I want to do it again. I love directing. I’m hooked.”

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While receiving the award for Breakthrough Director of the Year at CinemaCon, she shared similar sentiments.

“I feel like the only thing better than being an actor and seeing yourself on a big screen is being a director and seeing the work that you were lucky enough to create on a big screen,” Wilde, 35, told the crowd of movie theater owners. “It is the greatest honor to have my first film seen in movie theaters. This is what people dream about, and so many directors don’t get that chance, so I am just the luckiest person on earth.”

To use a Vegas term, her cast is “all in” on Wilde as a director, too.

While speaking about working with Wilde on Booksmart, star Kaitlyn Dever said, “Not a single person on earth has ever been this brilliantly smart and genuinely warm and ridiculously cool all at the same time.”

The coming-of-age comedy centers on two overachieving high school seniors (Dever and Beanie Feldstein) who finally agree to let loose on the eve of their high school graduation.

Booksmart opens May 24.