From a ranch in Montana to oil rigs in West Texas, “Yellowstone” fans are in for a treat as director Taylor Sheridan premieres his next project, “Landman.”

As Billy Bob Thornton once again shared the screen with Demi Moore, the Hollywood actor told Fox News Digital that he has maintained a good relationship with his co-star and her family – including ex-husband Bruce Willis – over the years.

“She’s always been a sweetheart,” Thornton said of Moore. “She was so nice to me when I first met her, when I only had two scenes in a movie she was starring in, and she is just as sweet today as she was then.”

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Thornton shared the challenges he faced while filming in Texas for “Landman.” (Randy Shropshire/Getty Images for Paramount+)

WATCH: ‘LANDMAN’ STAR DEMI MOORE WALKS ON THE RED CARPET AT THE SHOW’S PREMIERE

Thornton, 69, and Moore, 62, co-starred in the 1993 film “Indecent Proposal.” He also worked with Willis in the 2001 comedy-drama “Bandits,” along with “The Astronaut Farmer” and “Armageddon.”

Bruce Willis and Billy Bob Thornton starred together in ‘The Astronaut Farmer’, ‘Bandits’ and ‘Armageddon’. (E. Charbonneau/WireImage for Warner Bros.)

“I’ve always been very close to Bruce,” Thornton said. “Bruce and I have done three movies together… Demi always took the kids to the set. So I’ve known them like family for a long time… she’s amazing.”

Demi Moore attends the “Landman” Premiere at Paramount Studios on November 12, 2024 in Los Angeles, California. (Jon Kopaloff/Getty Images for Paramount+)

“I’ve always had a really good relationship with Bruce. Bruce and I made three movies together… Demi always took the kids to the set. So I’ve known them like family for a long time… she’s great.”

–Billy Bob Thornton

Willis and his ex-wife Moore share three daughters together: Rumer, Scout and Tallulah.

In March 2022, it was announced that Willis would be “retiring” from his acting career due to an aphasia diagnosis. It was later announced that he had been diagnosed with frontotemporal dementia, or FTD.

(L-R) Rumer Willis, Demi Moore, Bruce Willis, Scout Willis, Emma Heming Willis and Tallulah Willis. (Stefanie Keenan/Getty Images)

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During the premiere of “Landman,” Thornton told Fox News Digital about the challenges he faced filming in Texas for the show.

“We started in extreme cold and for the first few months we were frozen to death, even inside, because you can’t run the heater while you’re shooting,” Thornton explains.

“By the time we were done, it was boiling heat. Well, boiling heat isn’t that bad… I grew up in Arkansas… but I’ve lived in California since 1980. So my blood is very thin now.” he said with a smile.

WATCH: ‘COUNTRYMAN’ STAR BILLY BOB THORNTON SAYS DEMI MOORE, BRUCE WILLIS AND CHILDREN ‘LIKE FAMILY’ TO HIM

“When you’re trying to deliver a three-page monologue in 100-degree heat and you feel like you’re going to pass out at any moment, it’s not easy. But I can’t complain. I mean… I care for a life for my family doing something I love… I work with people I love and adore.”

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Sheridan’s new show, “Landman,” is set in the heart of West Texas and focuses on loose and wild billionaires looking to get rich quick in the oil industry as oil rigs begin to dominate the Lone Star State. The drama series is based on the popular eleven-part podcast ‘Boomtown’.

“Countryman” actress Michelle Randolph told Fox News Digital that she, Moore, Thornton and other cast members “all became a family.”

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(L-R) Paulina Chavez, Michelle Randolph, Billy Bob Thornton, Demi Moore and Ali Larter arrive for the Los Angeles premiere of Paramount+’s television series “Landman.” (UNIQUE NICOLE/AFP via Getty Images)

WATCH: ‘COUNTRYMAN’ ACTRESS MICHELLE RANDOLPH ON WORKING WITH DEMI MOORE, BILLY BOB THORNTON

“They’re the greats for a reason,” she said of Moore and Thornton. “They care so much. They’ve been in this business for so long because they really love it. They’re passionate and every time I’ve worked with them I’ve felt inspired by them.”

Randolph went on to describe her “Countryman” experience as “special.”

“We really all became a family… You’re stuck in Texas for five months with people you see… at all hours of the day and they’re all emotional… You just experience so much with so many people. It was really special .”

The Paramount+ series “Countryman” premieres Nov. 16.

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