Vicki Gunvalson has responded to claims of betrayal made by her Real Housewives of Orange County co-star, Shannon Beador.

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In her latest Bravo blog, shared on Friday, Gunvalson shoots down the idea, claiming she wasn't the one to expose David Beador's affair. Instead, she alleged, it was Tamra Barney who was first to expose David's cheating, as well as his mistress' identity.

"The finale episode where Shannon feels I betrayed her by telling my brother and his girlfriend about David's affair was wrong," Gunvalson wrote. "I never betrayed her, she was just embarrassed that it was exposed again when it was supposed to be about badgering me. I knew what David and Shannon shared this season, and it was Shannon's decision to reveal the affair so I didn't think it was a secret to tell my brother. All the ladies already knew, so for me to tell my brother privately was NOT betraying her."

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"What you don't know is that last year Tamra actually told the group about David's affair at a dinner we were all at, and even disclosed the woman's name and information about her," Gunvalson continued. "Bottom line here is Shannon knew that Heather, Tamra, and Lizzie all knew and by me telling my brother privately in my home was not any secret."

For more of Vicki Gunvalson's thoughts about Shannon Beador's claims of betrayal, check out The Real Housewives of Orange County season 10 finale clip below, and don't miss the season 10 reunion special, starting on Monday night, Oct. 19, at 9 p.m. on Bravo.