CraSH/Shutterstock Scheana Shay explained why she kept her husband Brock Davies' affair a secret for two years In an excerpt from her upcoming memoirMy Good Side, the reality star revealed how she learned of Davies' "brief affair" while she was pregnant with the couple's daughter, Summer Moon "There are some things that I haven't been as forthcoming about, or maybe that I never corrected the narrative on," she said ahead of the affair revelation Scheana Shayis revealing why she held back from revealing her husbandBrock Davies' affair. Nearly a week before an excerpt from theVanderpump Rulesalum's upcoming memoirMy Good Sidewas published, detaling how Davies confessed tobeing unfaithfulto his wife, the reality star explained why she hadn't been forthcoming about some aspects of her life until writing the book. When asked what the "the biggest shock" from the new book will be during the July 4 episode of herScheananiganspodcast, Shay, 40, teased "a couple moments that will really surprise people." "There's a lot about my past, my family, my earlier life experiences that I think the readers will be shocked by," she added. "I think people think they know everything about me, but after reading this book, you will, because you 100% do not right now. I can promise you that." She noted that fans know "a side of me from reality TV, you know a side of me from my podcast, my YouTube, you put it all together, you've maybe got, I don't know, let's say 80% of me, but the book will give you the rest." "Never shared my side of the story because I've been afraid, or thought, if I tell people what I'm actually going through, then they're gonna think that I'm trying to take the attention off what someone else is going through, and make it about me," she shared. The television personality said "that perception of me" caused her to hold back "at times from opening up on the show or on the podcast, because everyone always says, 'Oh, you make everything about you.'" However,My Good Sideoffered Shay the opportunity to give her side of the story unfiltered. She said, "In my book, I get to make it about me, and you'll hear the sides of my story that I have never shared until now in the book, in my own words, with my control of the narrative for once." Phillip Faraone/Getty "I remained in a state of paralyzed shock as he confessed that he'd cheated on me two years prior, when we were living in San Diego during the pandemic, while I was pregnant withSummer," Shay shared in a excerpt published byGlamouron July 10, adding that she was left feeling "completely sick to my stomach." She recalled Davies "admitted that — at the time — he was scared about being a father again, specifically about whether he even deserved to be, and he chose to deal with it by sleeping with someone else." "I use the word 'chose' because it was very much a conscious decision. No one twisted his arm or dragged him into bed," she shared. According to Shay, Davies had run into the woman, whom "he had known since before we met," while outside his gym, F45 Training East Hillcrest in San Diego, Calif. She added, "After reconnecting, he said they began a brief affair." PEOPLE has reached out to a representative for Davies for comment. Noam Galai/Bravo via Getty Images Davies and Shay welcomed their daughterSummer Moonin April 2021 and married inCancunin August 2022. After the headline-making cheating scandal between Sandoval and Leviss, Shay revealed thatshe "obviously" asked Davies if he had crossed the linewith the former pageant queen. "I absolutely did question him because after all the Tom and Raquel stuff, which I didn't think was true, I obviously had to ask," she said on an episode ofWatch What Happens Live with Andy Cohenin April 2023. "He said, 'Absolutely not,' but, as a follow-up question [I asked], 'Did she ever try?' As much as I trust my husband, I don't trust [Leviss]," she added. "He said no. He said he never put that energy off, and we know Sandoval did." Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. My Good Sidehits shelves on July 22 and is available for preorder now, wherever books are sold. Read the original article onPeople