Jennifer Lopez and her dancer enjoying a fun fling

Jennifer Lopez has only been separated from husband Marc Anthony for a few months, but rumors of new romances are already flying. A source tells People magazine that the singer-actress is hooking up with L.A.-based dancer Casper Smart.

Yes, they are dating and having a good time, affirms the insider. Theyve been getting more open with their flirting for weeks.

The dancer performs in clubs and said on Twitter Friday that he was dancing in the pop divas show.

But although J.Lo famously married a dancer, Cris Judd, this time around the relationship sounds more like a rebound romance. The source describes it as a fun fling, noting, Its not meant to turn into anything more.

An Us magazine source seconds that the relationship is nothing serious. Reportedly, the American Idol judge, who was spotted with Casper in NYC earlier this month, has only been dating him for a few weeks.

Wait just a minute here. Last we heard, Jennifer was supposedly getting hot and heavy with Bradley Cooper! What are we supposed to believe?

Pippa Back on Market!

Pippa Middleton and former cricket player Alex Loudon are done, the U.K.s Sun reports. The sister-in-law of Britains future king is said to have ended her three-year on-off relationship for good.

She and Alex split briefly in the summer, but this time its over, a source tells the paper of the 27-year-old commoner who has been dubbed Her Royal Hotness by the press. Theyre barely speaking.

Thinking Pippa might join her sister Kate in becoming a merry wife of Windsor? Dont get your hopes up. While William and Catherines royal wedding in April generated buzz about the maid of honors chemistry with his younger brother, Harry, the source claims, The truth is she and Harry are just mates.

And mind you, that means something different in England than it does here.

Supporting the Troops

Saturday night, Justin Timberlake went on a date with a woman who definitely wasnt his on-again girlfriend, Jessica Biel ! but wer e guessing shes OK with it.

J.T. attended the Marine Corps ball in Richmond, Va., with Marine Kelsey De Santis, who invited her celeb crush to the event in June via a YouTube video.

Over the summer, Justin declared his intention to accept the offer, saying, I dont get asked out ever! So I was very flattered by that.

The Social Network star posed for pictures and seemed like a normal guy, an attendee told a local TV station.

Justin seemed to have a good time, and it was great to see him there, a Marine in attendance told People magazine, adding, We all brought sexy back! And a sexy military force is a strong military force!