LeAnn Rimes and Eddie Cibrian's marriage has been hounded by his past with Brandi Glanville. Now, her past is catching up through a tell-all by ex-husband Dean Sheremet.

In Nat's Next Adventure, LeAnn Rimes' ex Dean Sheremet said that the singer might have sabotaged her own career by hooking up with Eddie Cibrian.

"The dumbest thing she ever did for her career was divorce me, because we were such a good team. The last hit song she had was when she was with me," he said.

LeAnn Rimes and Eddie Cibrian met and fell in love in the 2009 TV movie "Northern Lights." Its synopsis reads: "Nate Burns accepts a job as chief of police in Lunacy, Alaska, hoping to to get away from the traumatic death of his partner back in Baltimore. He meets Meg, an independent bush pilot, whose father is found dead in a mountain cave."

The irony was that it was Dean Sheremet who pushed LeAnn Rimes into doing the project because of his former's wife obsession about venturing into movies. But reportedly, he never was initially threatened by Eddie Cibrian's good looks.

"Never in a million years did I think something like that would have happened. The need for me in her life was so strong. There were things she couldn't do without me. She had her own phone but never used it," LeAnn Rimes' ex-husband said. "People would call me to get to her. Everything went through me."

Regarding Eddie Cibrian, Dean Sheremet said, "I wouldn't trust him as far as I could throw this f--king table."

To his credit, Dean Sheremet said it wasn't all LeAnn Rimes' fault why their marriage didn't work as he said that she might have felt closed in.

"Who's to know? Who's to say I wouldn't have left her? Who's to say I wouldn't have cheated on her? I was on the verge of outgrowing that situation. If the animosities kept building...You get into a vulnerable situation and you make stupid mistakes," LeAnn Rimes' ex husband said.