BRAD PITT has walked out on ANGELINA JOLIE and can­celed their wedding plans!

Sources say Hollywood’s most glamorous couple have been butting heads over Brad’s drug and drinking issues, Angie’s fears that he’ll cheat on her and her verbal abuse of their beloved chil­dren.

But the 48-year-old “Moneyball” star finally snapped when Angie, 37, insisted that he go to rehab to con­quer his demons, insiders say.

“Even though Brad denies up and down that he’s still using drugs, Angie is convinced that he’s secret­ly abusing pot and possibly other drugs behind her back,” revealed a source. “She’s also turned off by his excessive drinking.”

After a blistering fight in early October: “Brad stormed out of their French chateau,” the source said.

“They’d been quarreling over wedding plans when Angie said she wouldn’t walk down the aisle until Brad went to rehab. She said his drinking and drug use is a deal breaker.”

Following the dust-up, Brad jetted solo to Los Angeles to promote “The House I Live In,” a documentary that he produced. Ironically, the film chronicles America’s failed war on drugs.

And in a stunning slap in the face to Angelina, Brad joked to shocked onlookers: “I’m Brad Pitt, and I’m a drug addict.”

While he went on to say he’d kicked the habit, the “Fight Club” star made it clear he could fall off the wagon tomorrow.

“My drug days have long since passed,” he said, “but it’s certainly true that I could land in any city and any state and get you whatever you wanted. Give me 24 hours or so, and I’ll know where to find it.”

In the past, the big-screen heartthrob has blamed his drug use as one reason his mar­riage to Jennifer Anis­ton failed. “I started to get sick of myself sit­ting on a couch, hold­ing a joint, hiding out,” he admitted.

He’s even claimed that he previously gave up marijuana because it turned him “into a doughnut. I’m a dad now, you want to be alert.”

Despite that, sources insist that Brad still gets high. As The ENQUIRER has reported, An­gelina caught him smoking dope TWICE in two secret drug dens and read him the riot act.

And as The ENQUIRER reported, Angelina was left fuming over the summer after Brad snuck off for a night of boozing with British di­rector Guy Ritchie. Adding to their problems, Angelina is obsessed with the idea that Brad will cheat on her, and his sultry new TV ad for the women’s per­fume Chanel No. 5 has magnified her fears, says insiders.

“Angie’s worried that future Chanel ads will pair Brad with young, sexy model types and he’ll be tempted to stray,” said the source.

“Her insecurity is nothing new, but her paranoia has ramped up lately because Brad has been somewhat distant. She’s always thinking he’s hiding something from her.

“She knows from first-hand experience that when Brad gets bored in a re­lationship, he looks for stimulation elsewhere.”

Brad was married to former “Friends” star Aniston when he fell for Angie on the set of “Mr. & Mrs. Smith,” and The ENQUIRER has reported extensively on his wander­ing eye.

Earlier this year he flipped for gorgeous fellow Oscar nominee, Argentine-French actress Berenice Bejo of “The Artist,” and Angelina flew into a rage over his close work­ing relationships with several women on the set of the upcom­ing “World War Z.”

“Brad is fed up with Angie carrying on about his ‘other women,’” added the source. “He thinks it’s all just a smokescreen to divert his attention away from HER problems.”

As The ENQUIRER has reported, Brad has demanded that Angelina – who’s also bat­tled drugs – get counseling for her anger management issues.

She’s flown into violent rages that have left the couple’s children – Maddox, 11, Pax, 8, Zahara, 7, Shiloh, 6, and 4-year-old twins, Vivienne and Knox – frightened and in tears.

“When Brad is away, Angie gets overwhelmed and unloads on the kids,” said the source. “Brad has warned her repeatedly that she needs to get her anger issues in check. Ver­bal abuse is a major issue for him.”

Angelina’s volatile temperament has also wreaked havoc on her long- suffering father Jon Voight, as the two have been estranged on and off for years.

The 73-year-old Oscar winner broke down in tears recently while sitting alone in a Beverly Hills restaurant after his daughter shut him out again and friends told him that Angelina and Brad are doomed as a couple.

“Jon feels the whole family is a mess right now,” said an insider. “He doesn’t know what’s going to hap­pen.

“Meanwhile, Angelina has already had several fittings for her wedding gown with designer L’Wren Scott, but now she’s put her dress on hold.

“As for Brad, he’s telling friends he won’t go to rehab and that Angie simply needs to work through her insecurity is­sues. For now their relationship is in tatters.”