Shannon Beador revealed during seaso 10 of The Real Housewives of Orange County that her husband, David, had engaged in an eight-month affair prior to filming, and during the upcoming reunion, she'll be faced with questions regarding his infidelity.

Shannon Beador Speaks Of Marriage On Twitter Ahead Of Mistress' Identity Reveal

In the sneak peek of the upcoming three-part special, host Andy Cohen reads Beador a viewer question, which asks the reality star why her husband cheated.

"I was nagging and complaining," Beador began, before Heather Dubrow quickly cut her off.

Shannon Beador's Husband's Mistress Befriended Her, 'RHOC' Slams Her As 'Demented & Sick'

"That's bulls**t, it's not your fault," Dubrow tells Beador.

"That gives you a hall pass?" Tamra Barney then asks.

"You fix it, or you leave. You don't cheat," declares Dubrow.

Amid season 10 of The Real Housewives of Orange County, DailyMail.com revealed the identity of David's mistress. According to the site, the woman behind the affair was Nicole McMackin, a Southern California executive, who was also married at the time of the affair, and remains that way today.

As Beador revealed during the show, McMackin attempted to befriend her before she knew of her affair with David.

For more Shannon Beador, tune into The Real Housewives of Orange County season 10 on Monday, Oct. 19, at 9 p.m. on Bravo.

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Nicole mcmackin, David beador, Shannon beador, Bravo, Reality TV, The Real Housewives of Orange County