The 44-year-old designer spoke to her four kids after rumors earlier this summer that she and the former footballer were going to divorce.
During this time she sat down with Brooklyn, 19, Romeo, 16, and Cruz, 12, and daughter Harper, 7, to set the record straight.
The former Spice Girl reportedly made the admission in an interview with Vogue Magazine that is to be published this week.
A source revealed she wanted to be 'transparent' with her children.
The insider added: "They sat the children down and addressed these horrific, hurtful whispers.
"Both David and Victoria are very transparent with the kids to ensure they hear things directly from them – and not from the playground.
"After the latest furore, they once again took the decision to be open and honest with them, reassuring them Daddy is not a cheat."
The Beckhams started dating in 1997, before tying the knot two years later in 1999.
During the divorce rumors the 43-year-old's former LA Galaxy star's spokesperson Simon Oliveira, shrugged off the claims as 'embarrassing and laughable.'
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