The National Enquirer reports that Lopez, 39, and Anthony, 40—who are rumored to be on the brink of Splitsville—have an estimated $350 million fortune that would need to be divided if they dissolve their marriage.

There's also the matter of custody for their twins Max and Emme, who'll celebrate their first birthday in February.

It's questionable as to whether the kids' parents will even be together at that point, given their hostile behavior while celebrating New Year's Eve in San Juan, Puerto Rico.

The couple—who've been married for 4 1/2 years—broke into an explosive argument during a New Year's Eve party, with Anthony shoving his finger in his wife's face.

"At one point Marc took Jennifer to the side and got very serious with her," says a staffer at La Concha hotel, where the party—and the argument—reportedly took place. "It looked as if he was giving her some kind of orders—like a father scolding a child. It didn't look like a nice conversation. Put it this way—no one was smiling, and it was the biggest party of the year!"

Maybe he was warning her not to make a sequel to Gigli?

Of course, having $350 million at stake would make anybody edgy. Everybody wants to extract their pound of flesh—and in this case, there's plenty of that to go around.