Eddie Cibrian: Cheating on LeAnn Rimes With Brandi Glanville?!

In early 2009, Eddie Cibrian carried on an affair with LeAnn Rimes that was outed by celebrity gossip tabloids and ultimately ended his marriage to Brandi Glanville.

He's now divorced her and moved on (and in) with LeAnn ... who he's reportedly cheating on. With Brandi Glanville! What is this, the plot of It's Complicated?

Star reports that Glanville, who even said last month that Cibrian will always be a cheater, apparently was speaking with first-hand knowledge of the situation.

Alleging "passionate all-night sex sessions with Brandi," whom he’s in the process of divorcing after eight years of marriage, Star makes some serious claims.

We'd call BS right now, but Brandi herself is quoted confirming it!
"LeAnn is getting a bitter taste of her own medicine," a friend of Brandi Glanville tells the mag. "Eddie will keep cheating, because that’s just what he does.”

Apparently.

Eddie and Brandi’s hot hookups, snarky comments made about LeAnn, and Eddie's continued pursuit of the mother of his children are described in detail.

Cibrian denies this - as he did with the Rimes affair initially, BTW. On the flip side, Glanville pulled a Carrie Underwood, so she's a loose cannon as well.

Today Eddie Tweeted this: "Once again my ex has stooped to a new low by attempting to sabotage my beautiful relationship with LeAnn. Not surprisingly the only magazine that decided to run the story shares the same credibility and delusion as my ex."

Ouch! That one stings ... but you have to wonder with this guy.