> At a Glance
> – Robert Cosby Jr. pleaded guilty to 8 charges including felony property damage and assault on a peace officer
> – He will remain in Salt Lake County Jail without bail until February 2026 sentencing
> – His wife Alexiana filed for divorce in November 2025 after 3 years of marriage
> – Why it matters: The Real Housewives of Salt Lake City star’s only child faces potential prison time after years of substance abuse and legal troubles
Mary Cosby’s only son Robert Jr. is behind bars and headed for sentencing after admitting to multiple crimes including attacking a police officer and destroying property worth over $5,000. The 23-year-old’s legal troubles follow years of substance abuse that he publicly revealed on the Bravo reality show alongside his mother.
The Guilty Plea
Court records show Robert Jr. admitted to 8 of 14 charges in November 2025. The most serious include:
- Felony property damage ($5,000+)
- Assault on a peace officer
- Two counts of violating pretrial protective orders
- Criminal trespass with intent to cause fear
The remaining six misdemeanor charges were dismissed. He will remain in Salt Lake County Jail until his February 2026 sentencing.
The Incident That Started It All
The arrest stemmed from a September 2025 incident at his father-in-law’s home. According to court documents, Robert Jr. attempted to break in through a dog door after his wife Alexiana had been moved out of the Cosby family home.
Mary Cosby later explained to News Of Los Angeles:
> “They snuck out to be together, and as a result, her parents had him arrested for trespassing.”
The situation escalated when Robert Jr. allegedly:
- Vandalized the home
- Attacked his father-in-law on the lawn
- Bit a law enforcement officer
- Required tasing to be restrained
Substance Abuse Struggles
The legal troubles follow Robert Jr.’s public battle with addiction. In November 2024, he revealed to his mother on RHOSLC that he began using Xanax at age 16 and progressed to heroin.
> “I wanted to die at the time,” Robert Jr. told Mary. “You’re the only reason I didn’t kill myself.”
He completed a month-long rehab program in December 2024, with his wife also attending treatment.
Marriage and Divorce
Robert Jr. secretly married Alexiana Arian Smokoff in August 2022, keeping it hidden from his parents for nearly a year despite all three sharing the same Salt Lake City home.
On November 24, 2025-two weeks after his arrest and one day before his guilty plea-Alexiana filed for divorce. The petition prohibits both parties from harassing or disturbing each other’s peace.
Mary Cosby expressed doubts about the marriage’s validity:
> “I think they were out of their mind, and they maybe made up something. They said that the marriage license is in a safe, and the safe is locked.”
Family Support
Despite the turmoil, Mary has stood by her son. During his addiction revelation, she told him:
> “You’re my friend, you’re my son, you’re my gift. You’re the only thing that ever made me happy.”
She later called his arrest “a blessing in disguise,” believing he needed to face consequences.
Key Takeaways
- Robert Jr. faces sentencing in February 2026 after guilty plea
- Divorce proceedings underway as Alexiana seeks to end 3-year marriage
- Mary Cosby maintains support while acknowledging her son needed accountability
- The Faith Temple Pentecostal Church leaders’ son has struggled with addiction since his teens
The Cosby family drama continues to unfold as Robert Jr. awaits his fate behind bars, his marriage crumbles, and his famous mother balances public scrutiny with maternal support.
