Just like Luis, Mariah first met Australian billionaire James Packer in Aspen, CO. On a November 2015 episode of The Steve Harvey Show, Mariah said, "We first met in Aspen. A couple years ago we were at the Hercules premiere. We were talking and laughing and people were getting mad at us and stuff like that. So we hit it off." By June 2015, the couple was official, and in January 2016, James decided to pop the question.
Things seemed to be going well until September 2016, when the two took a disastrous trip to Mykonos, Greece. A rep for James later told Entertainment Tonight, "Mariah and James had a fight in Greece, and have not seen each other since," though it's unclear what the argument was about. By October 2016, a source for People reportedly claimed that the couple had been broken up for a month. A year later, Packer said he regretted the relationship during an October 2017 interview with The Australian. "I was at a low point in my personal life," he said. "She was kind, exciting and fun. Mariah is a woman of substance. But it was a mistake for her and a mistake for me."
Packer wasn't even mentioned in Mariah's memoir, because — according to Mariah — the relationship wasn't significant to her. "If it was a relationship that mattered, it's in the book. If not, it didn't occur," she told The Guardian during an October 2020 interview. When asked specifically about Packer, she said, "We didn't have a physical relationship, to be honest with you."