Credit: MTV

Leah Messer and Corey Simms were a match made in Teen Mom heaven — so what caused their marriage to fall apart at the seams? While many point the finger at Leah's infidelity, a close friend is speaking out exclusively to Wetpaint Entertainment in defense of the 20-year-old reality star.

"If you're going by what you see on TV, it looks like it was her cheating that ended the marriage. That’s not true, it was his cheating," Leah's friend said in a shocking revelation.

Turns out, Leah's hubby was having an "intimate relationship" with another girl after they wed in October 2010. Although the show's editing makes it seem like Leah snooped in Corey's email and found revealing Facebook messages after they filed for divorce in April 2011, the friend claims the steamy exchanges occurred while the couple was still married!

"She was suspicious that he was having a physical relationship with someone else so she went into his Facebook and that’s when she found the messages from the other girl," our source revealed. "It caused a blowout fight between them that was not captured on camera."

The couple tried to work things out, despite Corey's betrayal, but a reconciliation was not in the cards and they separated shortly after. 

"Months down the line, she and Corey sat down for the talk you see on the show [in the Season 2 finale], where she admits to sleeping with someone else because she was mad at him. But [that conversation] 100 percent happened while they were already separated, not while they were together," she source continued.

Quite frankly, we're shocked by Corey's behavior, but it makes sense as to why they opted to forego marriage counseling. This union was officially beyond repair!

Reporting by Beth Sobol.


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