J.LO WILL NEVER GO BACK TO BEN!

JILTED Jennifer Lopez forced smiles during a birthday trip to Europe and later at a big Hamptons bash, but insiders tattle she's finally accepted her marriage to sulky Ben Affleck is smashed beyond repair and is determined to make him pay big-time!

The 55-year-old Wedding Planner actress is reportedly going nuclear over her 52-yearold Batman hubby's betrayal and is gearing up for a scorching divorce war over their combined $550 million fortune.

"She's extremely hurt and humiliated and feels like she's been used," spills an insider. "She's not only mad, but she wants to get even, and to strike where Ben's most vulnerable his bank account!"

As GLOBE reported, Ben was such a cheapskate Jennifer funded most of their lavish lifestyle from private jets, limos, hotels and meals to basic living expenses like groceries and gas.

Now, the insider says the dejected diva's "made an itemized list of all their expenses and is seeing how she paid for most of everything.

"She even doled out the tips for takeout. Now she wants her pound of flesh. It's payback time!"