Mary Cosby Breaks Silence Following The Tragic Death Of Her 23-Year-Old Son, Robert Cosby Jr.

"Real Housewives of Salt Lake City" star Mary Cosby has broken her silence after her son, Robert Cosby Jr., died. He was 23.

Mary Cosby was open about her son's struggles with addiction during earlier episodes of the Bravo reality series.

"Our beloved son Robert Jr. has been called home to the Lord," Mary shared on Instagram on February 25. "Though our hearts ache, we take comfort in God's promise and in knowing he is finally at peace. We are grateful for your prayers and trust in the Lord to carry us through this time of sorrow."

According to an earlier report from The Blast, a Salt Lake City Police Department spokesperson confirmed that they responded to a call for a possible overdose at 6:14 PM on Monday, February 23.

Authorities told Us Weekly that Robert was found dead upon their arrival.

Robert was Mary's only son. The reality star let viewers into their personal lives as personalities on the Bravo franchise, sharing more about their family's dynamics and Robert's struggles with addiction.

In an emotional 2024 episode, Mary spoke with Robert about his addiction, during which he revealed he was taking "Xanax." He added, "I just took half to chill me out, and then I had an Adderall to balance out the Xanax. … When I get high, it's like adding seasoning to [my life]."

Robert told Mary that when he first began experimenting with drugs, he thought he'd only stick to "natural stuff." That changed, however, when he went to a party, and someone gave him other drugs.

"Then, I started doing Xanax with Acid, and then Molly with Xanax. I really like Xana,x so I mix it with everything. Xanax and cocaine. You know the regular 30mg Oxys? I noticed … this was, like, a turning point for me. I was taking 10 at once, and I couldn't even feel it," he said.

In an October 2025 interview, Mary got even more candid about her relationship with her son, revealing she was "shocked" to learn the young adult was using hard drugs. Later, Mary admitted she began blaming herself for his struggles.

Mary, however, said she wanted to remain as calm as possible when speaking with Robert about his behavior, hoping to change his ways slowly.

"I don't believe in judging people. I'm just not a judger. I don't like judging people, and I don't like to do it. … If he's opening up enough to tell me something this crucial, then why would I judge? I have no choice but to sit there and receive it and accept it and hope that I can help him," she said.

Mary's boss, Andy Cohen, shared a brief statement on social media after learning of Robert's death.

"Devastatingly sad news out of SLC," he wrote online, according to E! News. "This is every parent's worst nightmare. My heart is broken for Mary, and I am sending all my love to her and Robert Sr."

On social media, other "Real Housewives" stars reacted to the news, including Crystal Kung Minkoff, who wrote, "Sending love."

"Real Housewives of Potomac" star Wendy Osefo shared, "May God wrap you and your entire family in His arms. Love you."

Shamea Morton from the network's Atlanta iteration commented, "Sending you so much love, sis.

According to Page Six, Robert was recently released from jail in early February 2026 after spending two months behind bars.

Robert was reportedly arrested in November 2025 after appearing at his ex-wife's home and violating a protective order. Before that, Robert was arrested in September 2025 after allegedly trying to enter his ex-wife's residence through a dog door and later attacking her father and an officer.

Robert's lawyer, Clayton Simms, previously said the 23-year-old's time in jail was a "blessing."

"It allowed him to sober up and start thinking clearly. He's looking forward to doing positive things. The difficulty is that he was slow to recognize the dissolution of his marriage. But now he understands the relationship is over, and he's moving forward," he said.