Affleck, 49, and Lopez, 52, are making sure they do things differently this time around, as the actor used to hit the gym with his brunette babe when they first reconciled last year, but it seems he's already back to his old ways.
"When they first started dating, Ben was up at 5 AM, hitting the gym with J.Lo," a source explained to the print issue of Star Magazine. "He was a lot more conscious about looking like a guy who was worthy of dating Hollywood's biggest glamour gal."
But now, Affleck "barely exercises and lives off burgers and donuts," pointed out the insider, which isn't boding well for his wife-to-be. "J.Lo has told him this is unacceptable."
With their wedding coming up, Lopez has put her fiancé on a strict diet and workout regimen to make sure they look like the picture-perfect Hollywood couple. "She expects him to pick up the slack and wants him working out every day and eating right, no excuses," concluded the source.
Meanwhile, J.Lo's weight worry isn't the only issue the two are running into when it comes to their special day. Not long after Lopez confirmed earlier this month that Affleck popped the question for the second time — he first got down on one knee back in 2002 before they called off their 2003 nuptials and split months later — OK! learned their plans for their wedding day aren't aligned.
The Tender Bar star would "love something on the smaller side, with just family and close friends," while Lopez is hoping for an elaborate, star-studded celebration — think: 300 guests, a lavish reception with a sit-down meal and entertainment.
Hopefully the couple will work out their wedding woes, as they've made it clear they're determined to make their romance work this time around.
And while many are rooting for Bennifer 2.0's happily ever after, there's one unlikely person on their guest list who seems not-so-interested in their relationship: Casey Affleck.
“He finds them superficial,” spilled an OK! insider. “Ben and Jen are at the center of the whole L.A. social scene, which Casey finds frivolous and has really divorced himself from.”
Concluded the source of the broody Manchester by the Sea star, 46: “Casey is allergic to the circus Ben’s life has become, and it’s just not a world he knows or cares to navigate.