Though the rest of the world may have been blindsided by the news of Harry Styles and Olivia Wilde‘s new relationship, those close to the couple describe their romantic bond as totally “organic.”

According to Entertainment Tonight, Styles and Wilde’s budding situation came after spending long workdays together on set of their upcoming film, the psychological thriller Don’t Worry Darling. News reports quickly confirmed the pair’s connection after images of the two holding hands while attending Styles’s manager’s wedding in Santa Barbara over the weekend began circulating online.

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“Olivia and Harry are together for long days on set and have gotten to know each other really well, so it’s all very organic,” a source told ET.

The source also emphasized that even though the pair’s romance began on set, Wilde is not the type of person to allow her personal life to affect her professional one. “[Olivia] wouldn’t let a romantic relationship get in the way of a professional one, so anything they’re doing is being done thoughtfully,” the source said.

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Styles has reportedly indulged in a number of low-key relationships in recent years, including those with the likes of Taylor Swift, Kendall Jenner, and model Camille Rowe. News of Wilde splitting from her fiancé and the father of her children, Jason Sudeikis, broke back in November; however, the source for ET revealed that the couple actually “split almost a year ago.”

“It’s not like she’s rushing into something,” the source added. “Olivia and Jason talk all the time and are still close because of the kids. It’s highly unlikely he was blind-sided by this news.”

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This article first appeared on Harper’s BAZAAR US