Eddie Cibrian's Ex on LeAnn Rimes and Cheating: "It Made Me Sick"

Brandi Glanville exclusively sits down with E! News to dish on the fallout of her husband's extramarital affair and how she wishes the duo well despite their betrayal

Over the past months we've heard from the other women (oh, how we've heard from them). Now it's time to hear from one of the original women.

In an exclusive sitdown with E! News, Eddie Cibrian's indisputably wronged ex, Brandi Glanville, discusses the demise of her marriage, LeAnn Rimes' role in that, and how she and her kids are dealing with the fallout from the shocking betrayal.

While some wives are, well, blindsided by news of their spouse's infidelities, that clearly wasn't the case with Cibrian and Rimes, according to Glanville. The two costars instantly sparked on the set of their TV movie, Northern Lights.

"There was a chemistry," Glanville says. "You couldn't deny it. It was very much the Eddie-LeAnn show. It was like this flirtation. I just felt like she wanted my man. I just wanted to completely kibosh it."

While the world now knows Glanville's efforts were ultimately unsuccessful, at the time she was desperate to try anything, including double dating with Rimes and her then-hubby, Dean Sheremet. Cibrian abided, and Glanville thought that was that.

Cut to the sudden tabloid explosion of photos of Cibrian and Rimes kissing in a bar. After his initial denials, Cibrian copped to the affair and he and Glanville entered into couples therapy. It didn't exactly do the trick—three weeks later, tabloids reports linked Cibrian to a cocktail waitress. It was revealed that that affair had spanned a whopping three years, Glanville contends, and included the period of time in which she was pregnant.

"I literally went and threw up," Glanville recounts. "I was pregnant. To find out that whole time that he was doing that—it just made me sick."

Having determined that their marriage was irreparable at that point, the couple filed for divorce in August of last year. It didn't take long for Cibrian and Rimes to go public (well, more public) with their relationship, and Glanville found a kindred, albeit damaged, spirit in Sheremet.

"He was heartbroken," she says of Rimes' ex. "We were both crying. It was horrific."

Glanville says she ultimately made the decision to put sons Jake and Mason first and make nice with both Cibrian and Rimes.

That is, until two weeks.

According to Glanville, she was sent a cease-and-desist letter from Rimes' lawyers, claiming Glanville had slandered the country singer.

"It's a bit of a contradiction sending me a letter and then doing an interview saying she's sorry," says Glanville. "All I know is I haven't gotten an apology."

And while a mea culpa would be nice, it's no longer something Glanville needs to move on with her life, as she's currently prepping to move out of her Hidden Hills neighborhood, where both Cibrian and Rimes currently live (awkward), and says despite the turmoil, Glanville wishes the couple well.

"I think it would be great," Glanville says of the possibility that the couple may eventually marry. "I think the consistency for the children, not having different women come in and out of his lives, would be the easiest thing."

As for LeAnn, she's didn't comment on her olive branch retraction, but did address her apologetic interview with E! News at last night's CMT Awards.

"I mean, obviously I was able to talk about it for the first time on a level that I felt comfortable with. Obviously it's a very personal thing to talk about. I don't think everybody will fully know the truth."