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The Real Housewives of Orange County, TRHOOC, Shannon Beador

Paul Drinkwater/Bravo

Shannon Beador has a knack for revealing bombshells. The Real Housewives of Orange County star opened up about her husband's affair on the season 10 premiere of the hit Bravo reality star and since then she's been frank and raw about her feelings of betrayal as she and husband David Beador pick up the pieces. But she's not done revealing dramatic twists.

Shannon stopped by Bravo's Watch What Happens Live Monday alongside Real Housewives of New York City's Dorinda Medley and confirmed that yes, Tamra Judge knew about her husband's affair when they filmed the season nine reunion, but that's not all…

"They all knew before I did," Shannon said. "They did."

"No!" Andy Cohen said.

"No one said anything?" Dorinda asked.

"No...very shortly before I found out," Shannon said. "I know now that they all knew, so..."

This clearly shocked Andy as much as it did viewers at home.

"At the time when it should've been the best year of my life, he started an affair," Shannon revealed on the show while at couples counseling with David. She said David came clean on Apr. 1. Yes, April Fools' Day. "I caught him whispering to this person on the phone and I suspected something was wrong...I just knew something was different and I was told I was crazy...I knew." She later discovered hotel receipts in his briefcase.

In a recent episode, the couple went out for a Valentine's Day dinner and David gave Shannon a bracelet as a gift. It was a far cry from the previous year's holiday when David didn't get her anything.

"Valentine's Day dinner with David was one of my highlights of filming! He was thoughtful in every way possible! He loves John Hardy bracelets and I have given him a few with dragons on them because we were both born in the Chinese year of the dragon. But the most special part of the night was when David read me his card. He usually buys cards with the words or poem already printed and then signs his name (which is great!)," Shannon wrote in her Bravo blog. "This time he wrote his own words and I was blown away. I also never see my husband tear up -- once when we put our dog down and then the second time at our Couples Retreat. It was on this night that I knew for certain that David and I were going to make it. He said things to me that I never thought possible after our ordeal. The love I saw from him was deep. I will never forget this touching night!"

The Real Housewives of Orange County airs Mondays at 9 p.m. on Bravo.

(E! and Bravo are both part of the NBCUniversal family.)