Denise Richards is reportedly taking the shocking death of her ex Patrick Muldoon extremely hard.

Muldoon died on Sunday following a sudden heart attack. He was 57 years old.

Richards, who dated the actor for nearly five years in the late ’90s but knew him since she was a teenager, is “inconsolable,” the Daily Mail reported.

“She’s devastated. Really, really sad,” a source close to the actress told the outlet. “I’d even call her inconsolable. She can’t stop crying.”

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Denise Richards is reportedly “devastated” and “inconsolable” after the sudden death of her ex Patrick Muldoon. They’re pictured here together in September 1999.Ron Galella Collection via Getty Images

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Richards — seen here in September 2025 — “can’t stop crying,” a source told the Daily Mail.Getty Images
Richards, 55, met Muldoon when she was 19 years old and he was 21 in an acting class. They remained close friends until his death.

“Patrick is the ex that she had the best relationship with,” the source said of the exes. “There was a ton of respect on both sides.”

“It was so amicable that they were better friends than lovers and they remained in constant contact. She was his biggest supporter, he was hers.”

Page Six reached out to Richards’ rep for comment, but didn’t receive an immediate response.

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The source noted that the “Days of Our Lives” alum was the ex that Richards had the best relationship with.Ron Galella Collection via Getty Images

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Richards and Muldoon — seen here together in November 1999 — dated on and off for nearly five years in the late ’90s.WireImage
Muldoon spoke about his close friendship with Richards — whom he starred in 1997’s “Starship Troopers” with — during his appearance on Tori Spelling’s “MisSPELLING” podcast in October 2025.

“We both don’t come from entertainment families, and our families got to know each other over the years and kind of checked in with each other on navigating the crazy stuff that we all go through,” he said.

He shared that despite the two not ending up together romantically after an “on and off” relationship, he was still close with Richards’ kids with Charlie Sheen — daughters Lola, 20, and Sami, 22.

“I have a good relationship with both Lola and Sami,” he said. “I’ve known them since they were first born, and so I have a good relationship with both.”

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They starred in the 1997 film “Starship Troopers” together alongside Casper Van Dien.©TriStar Pictures/Courtesy Everett Collection

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Muldoon died of a sudden heart attack Sunday. He was 57 years old. He’s pictured here last month at the 53rd Annual Saturn Awards in Los Angeles.Admedia Photo / SplashNews.com
Lola paid tribute to Muldoon on Instagram Monday, revealing that she “begged” her mom to get back together with him.

“i thought you were the one that was supposed be in our lives forever,” she wrote in an emotional tribute to the “Days of Our Lives” alum.

“i will really miss hearing my mom laugh on the phone with you. your voice always brightened my day and i’m gonna miss hearing it but i know my mom will more, but we will never stop talking about you,” she also shared.

Lola thanked Muldoon for being her mom’s best friend.

“the bond you two had was something so special, that no one can touch,” she wrote. “when i think of my mom i think of you. you guys came as a package and i’m so thankful i got to know you and witness a friendship so pure and special in front of my eyes.”