The Biggest Loser couple Sam Poueu and Stephanie Anderson are reportedly divorcing due to infidelity on Poueu's part.

Anderson -- who is currently seven months pregnant with the couple's first child -- announced last week her marriage of only a year is ending, and while she failed to disclose any reasons behind the sudden split, People reported it's because Poueu had been cheating on his wife for the majority of their relationship.

"Stephanie felt they weren't connecting and decided they should go to counseling. It was getting dire," a source told People.

"In one of the counseling sessions, Sam thought he would make it better by confessing. He [admitted] that he had cheated on her with multiple women throughout the course of their courtship and marriage. He told her everything."

As a result of Poueu's alleged confession, "Stephanie decided to split."

When contacted for a statement, Poueu didn't deny the source's cheating claims.

"The circumstances and specifics of our marriage and our separation are extremely difficult and private," Poueu told People, adding that Anderson's pregnancy is currently the couple's priority.

"Our focus is on Stephanie's continued health through her pregnancy and the delivery of our son. We are excited to be blessed as his parents and are focusing all of our energy and attention on doing what is best for his future. He is the most important person right now to both of us."

Poueu, 28, and Anderson, 33, have yet to formally file for divorce but are in the process of doing so, their representative told Us Weekly last week.

The pair had announced Anderson is pregnant with a baby due in July earlier this year.

Poueu and Anderson met while filming The Biggest Loser's ninth season in 2009, and then Poueu proposed to Anderson during an episode of the NBC reality weight-loss competition which aired in October 2010.

However, Poueu tragically fell four stories down a fire escape and was hospitalized in critical condition in September 2011 -- resulting in a months-long and intense rehabilitation process.
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The couple then got married in April 2012 in San Francisco, CA.