Michele and Rob Reiner's son, Jake Reiner, was spotted shopping with his girlfriend, Maria Gilfillan, marking his first public appearance since his parents' murders. Page Six and TMZ have reported that Reiner and his girlfriend were seen holding hands as they sauntered across Malibu, California, on Saturday. Rob and Michele Reiner were stabbed to death at their home in Brentwood, California, on December 14. Their bodies were later cremated and given to Jake. As of this writing, not much is known about Maria Gilfillan, including how long she has been dating Jake. However, she was seen hanging out with her boyfriend and the rest of the Reiner family at a premiere in September. Everything we know about Michele and Rob Reiner's deaths so far as their kids issue a joint statement: Read more Following their parents' demise, Romy, who found her parents' bodies, and Jake Reiner, both issued a joint statement to Page Six that read as follows: “Words cannot even begin to describe the unimaginable pain we are experiencing every moment of the day. The horrific and devastating loss of our parents, Rob and Michele Reiner, is something that no one should ever experience.”The statement continued, “They weren’t just our parents; they were our best friends. We are grateful for the outpouring of condolences, kindness, and support we have received not only from family and friends but people from all walks of life. We now ask for respect and privacy, for speculation to be tempered with compassion and humanity, and for our parents to be remembered for the incredible lives they lived and the love they gave.” The pair did not mention their brother, Nick, in their statement, and neither did Jack Reiner's girlfriend, Maria, weigh in. Nick has been arrested and charged with the murder of Michele and Rob Reiner. He was hit with two counts of first-degree murder with a special circumstance. This could potentially land him the death penalty. He is currently being detained at the Twin Towers Correctional Facility, where he awaits his January 7 arraignment. Nick, who reportedly deals with schizophrenia, is planning to plead not guilty. The night before his parents' grizzly murders, he had gotten into a fight with Rob Reiner at Conan O'Brien's Christmas party. The Daily Mail reported that, on that night, the director expressed fear of his son, claiming that he could "hurt him." Stay tuned to SoapCentral for more.