Brooks Ayers clears up cancer speculation 'once and for all,' says 'Real Housewives' contributed to breakup with Vicki Gunvalson

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'RHOC' Star Brooks Ayers Opens Up 'Once and For All'

Real Housewives of Orange County's Brooks Ayers is speaking out "once and for all" about his cancer diagnosis, forging medical records and how much his ex, Vicki Gunvalson, knew about his illness.

"Prior to filming Season 10 (which began in December 2014), I was given the unfortunate news of my cancer diagnosis," Ayers told ET in a statement on Thursday. "Having lived under public scrutiny for the prior five years, along with being wrongfully positioned as something that I wasn't and knowing that I had a large battle ahead of me, I simply made a request to Vicki that we deal with this in a very private manner so as to keep out the noise of any questioning of my treatment choices moving forward."

"I was approached by a few media outlets to confirm my diagnosis and made a calculated decision to address it via a statement and an on camera interview in hopes that we would 'put this to bed' and allow me to move forward in private," he continued. "When filming began, so did the gossip with the women introducing my diagnosis on the show by referencing a blog and a psychic's 'feeling' that there was no cancer. Looking back, it was quite ridiculous actually."

See photos of Vicki Gunvalson through the years:

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Brooks Ayers clears up cancer speculation 'once and for all,' says 'Real Housewives' contributed to breakup with Vicki Gunvalson
WATCH WHAT HAPPENS LIVE -- Pictured: Vicki Gunvalson -- (Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images)
NEW YORK, NY - APRIL 14: Television personality Vicki Gunvalson enters the 'Today Show' taping at the NBC Rockefeller Center Studios on April 14, 2014 in New York City. (Photo by Ray Tamarra/GC Images)
THE REAL HOUSEWIVES OF ORANGE COUNTY -- 'Showdown at the Hoedown' Episode 906 -- Pictured: (l-r) Heather Dubrow, Vicki Gunvalson -- (Photo by: Evans Vestal Ward/Bravo/NBCU Photo Bank via Getty Images)
WATCH WHAT HAPPENS LIVE -- Pictured: Vicki Gunvalson -- Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images
WATCH WHAT HAPPENS LIVE -- Pictured: Vicki Gunvalson -- Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images
THE REAL HOUSEWIVES OF ORANGE COUNTY -- 'An Immodest Proposal' Episode 817 -- Pictured: (l-r) Vicki Gunvalson, Tamra Barney -- (Photo by: Vivian Zink/Bravo/NBCU Photo Bank via Getty Images)
BEVERLY HILLS, CA - SEPTEMBER 08: TV personality Vicki Gunvalson attends the Red CARpet event hosted by Britax and Ali Landry at SLS Hotel on September 8, 2012 in Beverly Hills, California. (Photo by Rachel Murray/WireImage)
LOUISVILLE, KY - MAY 07: TV personality Vicki Gunvalson attends the 137th Kentucky Derby at Churchill Downs on May 7, 2011 in Louisville, Kentucky. (Photo by Michael Loccisano/Getty Images)
THE REAL HOUSEWIVES OF ORANGE COUNTY -- Pictured: (l-r) Lynne Curtin, Alexis Bellino, Vicki Gunvalson, Gretchen Rossi, Tamra Barney -- Photo by: Mitch Haaseth/Bravo/NBCU Photo Bank
THE REAL HOUSEWIVES OF ORANGE COUNTY -- Pictured: Vicki Gunvalson (Photo by Isabella Vosmikova/NBC/NBCU Photo Bank via Getty Images)
WATCH WHAT HAPPENS LIVE -- Pictured: Vicki Gunvalson -- Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images
THE REAL HOUSEWIVES OF ORANGE COUNTY -- Season 4 -- Pictured: (l-r) Tamra Barney, Lynne Curtin, Vicki Gunvalson, Jeana Keough, Lauri Waring, Gretchen Rossi (Photo by Mitchell Haaseth/NBC/NBCU Photo Bank via Getty Images)
THE REAL HOUSEWIVES OF ORANGE COUNTY -- Pictured: Vicki Gunvalson (Photo by Vivian Zink/NBC/NBCU Photo Bank via Getty Images)
THE REAL HOUSEWIVES OF ORANGE COUNTY -- Pictured: (l-r) Lauri Waring, Gretchen Rossi, Jeana Keough, Tamra Barney, Vicki Gunvalson (Photo by Vivian Zink/NBC/NBCU Photo Bank via Getty Images)
NBC PRESS TOUR JULY 2008 -- 'All Star Party' -- Pictured: (l-r) Tamra Barney, Vicki Gunvalson, Jeana Keough, Lauri Petersen during the 2008 NBC Press Tour 'All Star Party' held at the Beverly Hilton Hotel in Beverly Hills, CA on Sunday, July 20, 2007 -- Photo by: Paul Drinkwater/NBCU Photo Bank
Vicki Gunvalson, star of "Real Housewives of Orange County" arrives for the 138th Kentucky Derby horse race at Churchill Downs Saturday, May 5, 2012, in Louisville, Ky. (AP Photo/Darron Cummings)
This undated publicity photo provided by Bravo shows Vicki Gunvalson, left, and Kimberly Bryant in a scene from "Party" in Bravo's season one of "The Real Housewives of Orange County." When Gunvalson first appeared on the first season of "The Real Housewives," she was married with two teenagers and sold insurance from home. She's now a first-time grandmother with her own insurance company and 12 employees. (AP Photo/Bravo, Jamie Trueblood)
Mar 21, 2006 - Newport Beach, California, USA - VICKI GUNVALSON, left, cheers when the debut of a reality show about her begins, during a party for the cast and friends to watch 'The Real Housewives of Orange County'. With her is friend VICKI RAMOSKA, who's son and Gunvalson's are roomates in Colorado. (Credit Image: © Mark Avery/The Orange County Register/ZUMA Press) RESTRICTIONS:
Real Housewives of OC cast member Vicki Gunvalson, left, and Tamra Barney meet with the people at the Virgin America launch Wednesday. A Virgin America Airbus A319 aircraft touched down in Orange County with a water cannon salute. Virgin America airlines, based in San Francisco, celebrated its service to Orange County with a red carpet welcome of its first flight by Sir Richard Bra
Shot in Coto de Casa, California. Dec 18, 2006 House of Vicki Gunvalson Talent: Jo de La Rosa Jeana Keough Tammy Knickerbocker Lauri Waring Vicki Gunvalson
Shot in Coto de Casa, California. Dec 18, 2006 House of Vicki Gunvalson Talent: Jo de La Rosa Jeana Keough Tammy Knickerbocker Lauri Waring Vicki Gunvalson
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WATCH: 'Real Housewives' Star Brooks Ayers Speaks Out on 'Fake Cancer' Claims

Ayers vehemently denied allegations that he was faking having cancer, standing by his story when ET spoke to him last September. Two months later, City of Hope Medical Center -- where Ayers claimed he had gotten chemo for stage 3 non-Hodgkin's lymphoma -- confirmed to ET that he had never been treated as a patient. He later admitted to forging medical records related to his diagnosis.

In his new statement, Ayers implied that he faked the documents in order to keep the real details private, then defended Gunvalson against accusations that she was helping him with some sort of cover-up. According to Ayers, there came a point when he excluded Gunvalson from any medical appointments and details on his treatments, because he "simply wanted to be left alone."

"Vicki was not 'in on any cancer scam or created storyline.' There is no scam," Ayers told ET. "I simply didn't continue to give her information about my illness when I learned of the devious nature and intentions of the cast. Second, Vicki never has paid me to be quiet regarding this 'supposed' scam nor has paid me to release any statements. Again, just because I am exercising my right to NOT share my actual medical records doesn't mean that I am guilty of making something like this up. Who even would question anyone dealing with this disease?"

WATCH: 'RHOC' Star Vicki Gunvalson Responds to Brooks Ayers' Cancer Treatment Lies

Ayers went on to describe Gunvalson as a "woman of integrity and compassion."

"Vicki was my partner for five years, and I believe the show was the demise of our relationship," he said.

As for Gunvalson, she responded to Ayers' statement on Thursday by thanking him for speaking out on the matter and clearing her name.

WATCH: 'RHOC' Star Vicki Gunvalson Gets Candid About Split From Brooks Ayers

"Over the last year, I have been bullied, belittled, and humiliated by viewers, the media, and my so called 'friends,'" she said in a statement to ET. "I am not now, nor have I ever been involved in covering for Brooks. I continue to wish him nothing but the best and hope that we can both now move past this difficult chapter in our lives."

Gunvalson and Ayers officially called it quits in August 2015, after dating on and off since 2011. Their first split was in 2013, but Gunvalson got back together with Ayers in the fall of 2014, around the same time she had learned he supposedly had stage 3 cancer. During a RHOC reunion, Tamra Judge claimed that Gunvalson wanted to leave her then-husband, Donn Gunvalson, in 2007 to be with Ayers. Gunvalson, however, didn't split from her husband until 2010.

Vicki Gunvalson on Brooks Ayers: 'This Man Is Sick'

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