When Jon and Kate Gosselin announced their separation on June 22, they vowed to put their eight kids first. The couple even agreed to split their time at the Wernersville, Pa., house, with Kate living there during the week and Jon coming to take care of the children on weekends. But instead of looking after the 8-year-old twins and 5-year-old sextuplets on Saturday, July 11, the Jon & Kate Plus 8 dad was catering to a 22-year-old: his new girlfriend, Hailey Glassman.

The cozy duo were spotted in St. Tropez, France, sipping champagne aboard Ed Hardy designer Christian Audigier's private yacht, lunching at Tahiti and shopping at the luxe Hermès and Prada boutiques. Jon, 32, appeared to have forgotten all about his family. "He was holding Hailey by the hand, carrying her purse and kissing her," says a witness. "Jon was very excited to be with her."

For more on Jon and his new girlfriend, pick up this week's issue of Life & Style, on newsstands now!

Photo Credit: Globe Photos