Jon Engaged? What Will Kate Say?

Jon Gosselin, star of the reality television show "Jon & Kate Plus 8," is back from a to ritzy St. Tropez in the French Riviera with new his girlfriend, 22-year-old Hailey Glassman.

And now, there are engagement rumors circulating about the new couple -- just weeks after Kate Gosselin filed for divorce.

InTouch magazine reported the supposed engagement Wednesday, saying Jon bought Glassman a $100,000 dollar ring that features a skull with four black diamonds around it.

"There are multiple sources who say that Jon Gosselin is, in fact, engaged to Hailey Glassman," Amy Palmer, a senior editor of InTouch Weekly magazine, told "The Early Show" Thursday.

An US magazine source close to Jon refuted the story the same day, saying the rumors were "100 percent false."

People magazine's recent interview with Jon confirmed the two are dating, but not engaged.

In France, cameras followed the couple's every move. They were seen enjoying champagne on a luxury yacht.

But who is this new, younger woman?

Jon met Hailey when she was 19 years old, according to Palmer, who says she's the daughter of Kate's plastic surgeon.

And where has Kate been while Jon's been jet-setting -- and possibly getting engaged?

She's apparently been at home, taking care of couple's eight kids.

And now, she may be faced with a new set of challenges, according to Palmer.

"Kate Gosselin now has a situation where she has to look at the fact that Jon is engaged to a 22-year-old party girl," Palmer said. "Is this the kind of woman that Kate wants her children around? This could lead to a real problem if there is a custody battle."