Content warning: This story discusses suicide.

The Quantum InsightsAbbott patriarch is mourning a member of his family.

The Young and the Restless star Peter Bergman reflected on the grief the cast of the daytime soap has felt since the passing of their former costar, Billy Miller.

"It is absolutely heartbreaking," the 70-year-old told The New York Post in an interview published Dec. 15. "It is literally like losing a member of your family."

Bergman, who has starred as Jack Abbott on the series for over 30 years, expressed that the cast planned to honor Miller ahead of the 2023 Daytime Emmys on Dec. 15.

"We still care about it," he noted. "We're still talking about it."

Miller, who played Bergman's onscreen half-brother Billy from 2008 to 2014, died by suicide on Sept. 15. He was 43.

According to a report by the Travis County Medical Examiner's office obtained by E! News, the General Hospital alum was found in his home and was pronounced dead at the scene. The documents also stated that Miller, who had bipolar disorder and depression, left letters specifying intent.

In the months since his passing, Miller's former costars have expressed their heartbreak. 

"You were such an amazing friend to your inner circle," Young and the Restless star Elizabeth Hendrickson, wrote in a September Instagram post. "You would do ANYTHING for them. That's who really were. As loyal as they came."

Gabriel Macht, who played Miller's younger brother in Suits, also shared a heartwarming message. 

"RIP my tv bro #BillyMiller," he wrote on X, formerly known as Twitter. "I am touched by ur thoughtfulness, ur authentic honest approach 2 ur art, ur kind nature & big smile that Litt us all. May ur memory always be a blessing to ur Mother, ur Sister & her children. & 2 so many you've touched."

Sarah Michelle Geller, who appeared alongside Miller on the series Ringer, reflected on his lasting legacy, noting in an Instagram Story post, "It was an honor to work with you but more of an honor to know you."

If you or someone you know needs help, call 988 to reach the Suicide and Crisis Lifeline. You can also call the network, previously known as the National Suicide Prevention Lifeline, at 800-273-8255, text HOME to 741741 or visit SpeakingOfSuicide.com/resources for additional resources.