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Did Gavin Rossdale's Unfaithfulness Cause His Divorce From Gwen Stefani?

ARCHIVE PHOTOS Gavin Rossdale and Gwen Stefani

Credit: Splash News

This celeb couple isn’t the only ones with broken hearts—fans are probably binge-eating something with sugar from the sad announcement that surfaced on August 3.

Gwen Stefani‘s divorce announcement from Gavin Rossdale was decided after the pair spent some time apart—Gwen in Montana with her sons and Rossdale in London from their Instagram posts recently.

Wow #Montana u r so beautiful #favoritevacaever #neverwanttogohome? ?????⛅️gx

A photo posted by Gwen Stefani (@gwenstefani) on

Bye bye London. Flying home. x

A photo posted by Gavin Rossdale (@gavinrossdale) on

Stefani reportedly decided to end her 13-year marriage to Rossdale after she had reason to believe he was cheating on her, according to TMZ, which sources also spilled that the split was “a long time coming.”

Even though the couple crushed rumors last year about the two splitting, calling it “loads of bulls—t,” now the Bush frontman is probably eating his words.

READ: Gwen Stefani Uses Photo Ops BY The Paparazzi To Show Off Her Parenting Skills

“I’m pretty dry and I’ve got a decent sense of humor, so [reporters] say to me, ‘You’re doing this, you’ve got a new record… ‘How do you guys find time for each other. And I said, ‘We don’t, that’s why we’ve been together so long.’ I was f—cking around, that’s funny to me,” Rossdale said during his appearance on The Howard Stern Show.

And when the “No Doubt” singer was asked about her handsome hubs in the March issue of Cosmopolitan, she said, “I never really saw myself landing a guy that hot. I don’t know if I was a nerd in high school, but I definitely wasn’t the super-cute cheerleader so I never saw myself getting somebody like that.”

Last year, Star readers know Rossdale was secretly talking to his 1980s transgender pop star ex, Marilyn. “Gavin admitted he’s kept in contact with Marilyn and that they talk from time to time,” an insider dished to Star. “Gwen couldn’t believe it. She was already embarrassed by their affair and she doesn’t understand why they still need to speak.”

Star also reported last year in December that Gwen referred to The Voice coach Pharrell Williams has her love guru. “Gwen considers Pharrell one of her best friends,” a pal told Star. “He has motivated Gwen to do things that she never thought she could.” With that, Pharrell also was reportedly responsible for offering marriage advice to Stefani when her and Rossdale’s rocky relationship. “He said her marriage would improve if she’s happy with her own career, and that’s what made her to The Voice,” the insider adds.

But it sounds like Stefani and Rossdale’s marriage was beyond repair. The couple will ask for joint custody in taking care of their three sons, Kingston (9), Zuma (6) and Apollo (17 months old).