Marc Anthony Tells J-Lo: I Want The Kids!

When Jennifer Lopez and Marc Anthony announced their divorce back in July 2011 it seemed set to be the most amicable split in a rocky year, with the stars even continuing to work together on their Latin talent show, Q'Viva! The Chosen.

But now sources have revealed that despite Marc agreeing to give J-Lo custody of their twins, Max and Emme, he "might go back on his word", after seeing pics of her frolicking with her new toyboy, Casper Smart.

"He wants to make Jennifer suffer because she's having fun with someone new, and he knows this will hurt her on the deepest level," a source told Us. Adding that the custody battle could turn "vicious".

The 42-year-old singer and American Idol judge moved swiftly on after her July 2011 split from Marc, and has apparently sold all of the jewellery the Latin superstar gave her during their seven-year marriage.

"Marc hit the roof," spilled a source over J-Lo's recent Hawaiian vacay with Casper and the three-year-old twins. Adding of photos of Casper playing with the kids, "It caused a huge blow-up."

But Jennifer, who pals say refuses to let the apparently controlling Marc tell her what to do now they've split is said to be "ready to smash him if he tries anything… It's getting vicious."

And with Casper due in court this month for traffic offences including accusations of drag racing dating back to 2010, protective dad, Marc, has already banned Casper from driving his twins around in the Bentley J-Lo gifted him last month.