Jessica Simpson is Jealous of Ex's New Love

Jessica Simpson is so mad that her ex John Mayer is hooking up with Cameron Diaz! Us Weekly is reporting that a source close to Jess said the singer is "really jealous" and can't get over it.

"She had her mouth open a mile wide when she found out," says the source. "She just freaked." John dumped Jess in May, after a seven-month fling, and Jessica is still reeling. "She thinks about him all the time," the spy said. "She is so not over him."

And Jessica might be waiting a while if she's thinkiing about swooping back in when John and Cam to break up. The new couple "looked very cozy" -- just last week -- at a club in NYC.

function csOpenWidgetShare(){ window.open('http://www.clearspring.com/widgets/469e160e75101054?pop=1','DailyBlabber','toolbar=0,location=0,status=0,menubar=0,scrollbars=0,resizable=1,width=640,height=600'); }

Connect with Us
Follow Our Pins

Yummy recipes, DIY projects, home decor, fashion and more curated by iVillage staffers.

Follow Our Tweets

The very dirty truth about fashion internships... DUN DUN @srslytheshow http://t.co/wfewf

On Instagram

Behind-the-scenes pics from iVillage.

Best of the Web