But now, she's opening up for the first time about her own dates before divorce, and telling the truth about all of her alleged affairs once and for all in her blockbuster new tell-all, Drinking & Dating: P.S. Social Media Is Ruining Romance -- and only RadarOnline.com has all the details.
"Last year," Glanville writes, I discovered, much to my surprise, that I was an unfaithful wife."
In February, Us Weekly reported that Glanville hooked up with former NBA star Rick Fox and Pink Taco millionaire Harry Morton while still married to Cibrian, claims Glanville flatly denies -- while pointing the finger at Cibrian's mistress-turned-wife, LeAnn Rimes.
"Who on earth could have anything to gain by leaking false information about an alleged affair seven days before the tell-all book about my philandering ex and his mistress Glanville's Drinking & Tweeting hit bookstores?" she asks. "Hmmm. You tell me."
"To top that, my 'affairs' were apparently with former NBA player Rick Fox, who I don't believe I've ever met," the Real Housewives of Beverly Hills star writes, "and restaurateur Harry Morton. Knowing what I do now about what a sham my marriage was, I may have welcomed dating either one of these eligible bachelors, but it just wasn't true."
Still, that doesn't mean she was 100% faithful to her husband until the day they divorced. Glanville admits to dating around before the ink on the divorce papers was dry.
Glanville writes, "Did I casually and frequently date before my divorce was finalized and my husband was already in a public relationship with another woman? Hell yes, I did."
But she insists, "Did I ever have an affair before that? No. Not ever. That's just not in my DNA."
Drinking & Dating hits bookstores on February 11.