Jane Fonda pays tribute to late costar and love Donald Sutherland, 'a brilliant actor and a complex man'

The "Klute" star says she's "heartbroken."

Jane Fonda is "heartbroken" following the death of Donald Sutherland.

The actress costarred alongside Sutherland in the 1972 Alan J. Pakula film Klute, for which she won the Oscar for best actress. The two had a romance on the set, and her influence inspired him to get more involved in politics.

On Friday, she honored him with kind words in an Instagram post: "Donald was a brilliant actor and a complex man who shared quite a few adventures with me, such as the FTA Show, an anti-Vietnam war tour that performed for 60,000 active duty soldiers, sailors, and marines in Hawaii, Okinawa, the Philippines, and Japan in 1971," Fonda wrote along with a vintage photo. "I am heartbroken."

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In a 2001 interview with the BBC, Sutherland recalled that their love was in full force during filming. After he was shown a scene he shot with Fonda, he noted they "made love an hour before we shot that."

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In March 2008, Sutherland told The Guardian, "We got together shortly before we made Klute and then we were together until the relationship exploded and fell apart in Tokyo. And it broke my heart. I was eviscerated. I was so sad. It was a wonderful relationship right up to the point we lived together."

Before the end of 1972, Sutherland married Francine Racette, who remained his wife until his death. But he and Fonda collaborated again for the 1973 comedy Steelyard Blues, which costarred Peter Boyle and Howard Hesseman.

Sutherland's death was announced by his son, actor Kiefer Sutherland, on Thursday.

"With a heavy heart, I tell you that my father, Donald Sutherland, has passed away," the actor wrote on X. "I personally think one of the most important actors in the history of film. Never daunted by a role, good, bad or ugly. He loved what he did and did what he loved, and one can never ask for more than that. A life well lived."

Related: Jane Fonda gets candid about Hollywood and famous costars: 'Don't let the f---ers get you'

Former colleagues, including the official Hunger Games account, sent their love as well.

"We asked the kindest man in the world to portray the most corrupt, ruthless dictator we've ever seen," the franchise posted on Instagram. "Such was the power and skill of Donald Sutherland's acting that he created one more indelible character among many others that defined his legendary career. We are privileged to have known and worked with him, and our thoughts are with his family."

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