Chrishell Stause Mourns Death of ‘All My Children’ Costar Billy Miller: ‘I Hope You Are at Peace’

Chrishell Stause is remembering her late costar Billy Miller.

Miller, who was best known for his roles in soap operas The Young and the Restless and General Hospital, died on Friday in Austin, Texas at the age of 43.

According to a statement from his manager obtained by PEOPLE, Miller was “struggling with manic depression when he died.” No specific cause of death was cited.

Selling Sunset star Stause, 42, worked with Miller on All My Children when the Daytime Emmy Award winner joined the soap as Richie Novak in 2007. Stause played Amanda Dillon from 2005 to 2011.

On what would have been the actor’s 44th birthday Sunday, Stause paid an emotional tribute to her “friend” and former costar on Instagram.

Alongside a snap of Miller giving her a kiss on the cheek on a red carpet and a photo of him with the words, “Billy Miller 1979-2023,” written over the top, the actress shared that she was still “processing” the news of his passing.

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“Too many feelings, but you are gone too soon and I’m so happy I got to work with you all those years, but also call you a friend. I hope you are at peace now 💔🙏,” Stause added.

After starring in All My Children from 2007 to 2008, Miller went on to star in The Young and the Restless from 2008 to 2014, earning three Daytime Emmy Awards for his portrayal of Billy Abbott. The star won outstanding supporting actor in a drama series in 2010 and 2013, as well as outstanding lead actor in a drama series in 2014.

His The Young and the Restless costar Eileen Davidson also paid tribute on social media and shared a throwback of the pair at the 2014 Emmys where they both won awards.

“I’m so sad to hear of Billy Miller’s passing,” the Real Housewives of Beverly Hills alum wrote in a post on X (formerly known as Twitter) on Sunday. “His infectious charm and warmth left lasting impressions on all of us who were lucky enough to have him in our lives. Im gonna miss that mischievous smile. Love you Billy.”

Miller also starred in ABC’s General Hospital, joining the soap as Jake Doe in 2014. He later took over Steve Burton’s role of Jason Morgan from 2016 to 2017, before starring as Morgan’s twin, Drew Cain, for two seasons when Burton returned to the series.

Michael Fairman TV revealed the news of Miller’s death on Saturday.