JENNIFER LOPEZ and MARC ANTHONY are headed into a bitter divorce battle over her $250 million fortune.

Following years of terrible strife, Jennifer finally declared the marriage over in a single act of defiance – by agreeing to do another season of “American Idol,” against Marc’s desire.

“In the end, all the battling became pure torture for J.Lo – she simply told him, ‘I’ve had enough,’ ” said an insider.
The pair announced their split on July 15, but they actually separated in early July, The ENQUIRER learned, after Marc disagreed with his wife’s decision to return to “Idol.”

 And even though the macho singer is worth about $60 million himself, insiders expect him to go after Jennifer’s much larger bank account.

  “There was no prenup­tial agreement when they got hitched in 2004, so she could be on the hook for as much $125 million,” an insider told The ENQUIRER. “But her attorneys will undoubtedly argue that Marc made tens of millions himself and that she shouldn’t have to pay a dime.”

Marc, 42, is very upset because his 42-year-old wife not only decided to serve as judge on another season of “Idol,” but also signed for a summer movie – which clashed with his career plans, divulged a close source. 

The Latino heartthrob “felt betrayed,” added a family friend, because they had already announced that they were teaming up for a Latin reality show/talent contest called “Q’Viva! The Chosen.”

  “It was HIS deal and Jennifer was crucial to it,” noted the friend.

  “Q’Viva” producers say the show is set to film this autumn throughout Latin America – and that both Jennifer and Marc remain committed to it, added the source.

But juggling the time schedule between “Q’Viva,” “Idol” and the new movie is going to be extremely difficult for Jennifer.”

Meanwhile, Jennifer had been on the fence about returning to “Idol” for a long time.“Saying she was rejoining ‘Idol’ was really her statement that the marriage was over.”
According to one family source, “Marc berated her in front of her family, her nannies and her bodyguards. It was almost as if he never let her do anything without him.”When the J.LO became a judge on “American Idol” in January 2011, sources say she made sure that Marc appeared on the show to stave off his temper tantrums.

 While Jennifer is back on top, Marc is NOT.

As of January 2011, Marc reportedly owed the IRS a whopping $3.4 million in unpaid taxes – which could intensify the divorce battle over the couple’s assets.
“It’s going to be ugly and it’s only just begun,” said the close source.