Article continues below advertisementJake Reiner attempted to enjoy a typical Saturday with his girlfriend, Maria Gilfillan, as he was spotted in public for the first time since his parents, Rob and Michele Reiner, were murdered on Sunday, December 14.On December 27, Jake was photographed holding hands with his lover in Malibu, Calif., during a casual shopping trip just days after celebrating a sorrowful Christmas following the tragic deaths of his mom and dad.