Inside Rob Reiner’s son Nick’s ‘hostile’ dynamic with siblings Romy and Jake

Rob and Michele Reiner’s son Nick had a “hostile” dynamic with his siblings, according to a new report.

The 32-year-old, who has been arrested for his parents’ murders, allegedly “always” had a “volatile” relationship with all of his family members, including brother Jake and sister Romy, a source told Us Weekly.

The outlet reported on Monday that Romy in particular “has been so traumatized by Nick’s behavior” over the years.

Rob Reiner’s son Nick (back) had a “hostile” relationship with his siblings (far left and right), according to a new report. @michelereiner/Instagram

Nick, pictured above in 2024 second from left, “always” had a “volatile” dynamic with his family, Us Weekly claimed. Getty Images for Wynn Las Vegas
“She has always been so close with her parents, and watching their constant pain over Nick has impacted her and the whole family so much,” the insider explained.

“It’s been so much of their life,” the source added. “Rob and Michele were honest about their struggles with Nick, and those who spent time with the family saw it firsthand.”

Nick’s “anger was directed at his parents for many, many years,” according to the outlet.

Sister Romy especially has allegedly been “so traumatized” by Nick’s behavior over the years. Romy Reiner / Instagram

She reportedly watched Nick (second from left) put Rob and Michele Reiner (center) in “constant pain.” michelereiner/Instagram

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“They did everything a parent could possibly do to help him,” the insider alleged. “Even in his younger years, they really tried to get him help. And then it became a cycle of seeking treatment for him, kicking him out, or him leaving the house, him moving back in.”

Page Six similarly reported Monday that Nick, who has battled drug addiction for more than half his life, was “egocentric” with “serious behavioral issues” from a young age.

Yoga instructor Alanna Zabel told us that when she worked with Rob and Michelle in the early 2000s, Nick “interrupted pretty much all of [their] yoga sessions” for “20 minutes or so” with “intense … screaming.”

Nick (center) “has impacted her and the whole family so much.” jakereiner/Instagram

Struggles with Nick (center) have consumed “so much of their life.” michelereiner/Instagram
She insisted the late couple tackled their son’s issues “head-on” at the time.

Another insider told us that Nick “really resented his dad” and “hated himself for not being as talented, prolific or beloved.”

Rob and Michele were found stabbed to death in their Brentwood, Calif., home by Romy over the weekend, hours after attending Conan O’Brien’s Christmas party.

Nick (second from right) was arrested on murder charges on Sunday. michelereiner/Instagram

Hours earlier, Rob (left) and Michele (center) were discovered stabbed to death in their home. michelereiner/Instagram
At the holiday bash, the duo reportedly got into a “very loud argument” with Nick and left.

On Monday, People reported that Nick had been “freaking everybody out” at the event by “acting crazy” and “asking people if they were famous.”

Nick was taken into custody on Sunday and is on suicide watch at Twin Towers Correctional Facility in Los Angeles, where he is being held without bail.

The Post confimed Romy (left) was the one to find her parents’ bodies. jakereiner/Instagram

Nick (center) is being held without bail and is on suicide watch. Richard Shotwell/Invision/AP

While Romy and Jake have yet to speak out individually about the tragedy, Rob and Michele’s “heartbroken” family did issue a statement expressing “deep sorrow.”

Additionally, Rob’s eldest daughter, Tracy, from his first marriage told NBC News how “shock[ed]” she was by the news.

The 61-year-old said, “I came from the greatest family ever. I don’t know what to say.”