Scheana Shay is providing new details about her affair with Eddie Cibrian when she was just 21-years-old.

Eddie Cibrian was married to Brandi Glanville at the time he started seeing Scheana Shay, but Shay says she had no idea.

Shay tells the story about how she met Eddie Cibrian while she was working at a private members-only club where “every A-List celebrity, director, writer and actor hung out,” an excerpt of her book, “My Good Side” reads.

Her roommate also worked there and helped her get the coveted gig at “the hottest place to work in Beverly Hills,” hoping it would be a place where she can get discovered.

“If you were to ask me when I was growing up what my exact type was, to a tee it was Eddie—tall, dark and handsome, with dimples. The second we made eye contact, he smiled at me with those dimples, and I melted [] he always made me feel like I was the only girl in the room when I was working.”

The “Vanderpump Rules” star admits that Eddie being married was never a thought for her, “This was pre-social media, so it wasn’t like he was posting pics of his family in matching pajamas in front of a Christmas tree.” She also notes how he never wore a wedding ring she “assumed he was single.”

While they were never an official couple, Scheana details their weekly hookups which started in 2006 as “a weekly booty call.” She writes how their hookups would always happen on Tuesdays after her shift, they’d go out with his friends, he would take her sailing on his boat and would be “taking photos together.”

“In hindsight, it was pretty brazen of him to fully be out in public with a bunch of single women while his wife and child were at home. The frightening thing is that I thought I could end up with Eddie.”

While she is feeling things out with the actor, she realized she wasn’t ready to commit, nor had she and Eddie been exclusive, so that’s when she met Jesse Metcalfe, “the sexy gardener from Desperate Housewives,” she writes.

This hookup began in 2007, but when things started to fizzle out between Scheana and Jessie, she and Cibrian reconnected.

“It really felt like we were building something. Did I think it was weird that I never went to his house? No! He lived in Calabasas, supposedly. And I certainly wasn’t making the trek to Calabasas in 2007, when Ubers didn’t exist, and I had less than $1,000 to my name.”

It wasn’t until a coworker informed the not yet reality star that Eddie was in fact married, “He must have seen that we were getting more serious and didn’t want me to get in too deep.”

In the book she writes she point-blank asked Eddie about the possibility of he being married and he denied it, “No, that’s insane. Why would you ask me that?”

“It was gaslighting in its most basic form,” Scheana notes. “Yet I trusted him, so we continued hanging out.”

As news unfolded, it came to light that Eddie was sleeping with someone else other than his wife and Scheana, it was LeAnn Rimes and they ended up getting married back in 2011.

Scheana Shay’s book, “My Good Side” hits bookstores on July 22.