hugh hefner fiance cheating Hugh Hefner's 24-year-old fiancee, Crystal Harris, might not be ready for monogamous matrimony with her 84-year-old beau after all. Life & Style writes that Harris has been cavorting with Dr. Phil McGraw's son Jordan.

The magazine reports witnessing the "lovebirds cozy up at the Chateau Marmont in LA on March 14. While Crystal was hoping to keep their romance low-key, Jordan didn't care to hide his affections, kissing her shoulder and trying to hold her hand -- still adorned with her 6-carat engagement ring."

Jordan is Dr. Phil's younger of two sons. The older, Jay, is married to Playboy model Erica Dahm.