LeAnn Rimes' first husband, Dean Sheremet, who was married to her for seven years before divorcing in 2009 following her affair with then-married Eddie Cibrian, revealed details about the situation in a recent interview with Nat's Next Adventure.

Even before the affair, Sheremet said there were a lot of "animosities that built up" between him and the 32-year-old "How Do I Live" singer, largely due to the fact he was involved in every aspect of her career.

"I felt like I was never having my needs met so there was fighting," he revealed, adding that he believes business ended up destroying their marriage.

Nonetheless, the former backup dancer said he was blindsided by her affair with 41-year-old Cibrian, her "Northern Lights" co-star.

"Never in a million years did I think something like that would have happened," he admitted to Nat's Next Adventure. "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. People would call me to get to her. Everything went through me."

Sheremet never felt threatened by the "CSI: Miami" actor. "I just remember being like, 'Oh, God, just another one of those Hollywood pretty boys,'" he said, and added, "But I wasn't worried."

The nature of Cibrian's relationship with Rimes came to light when Sheremet became ill and had to leave the Lifetime TV movie set for a week. There was a "huge shift" upon his return, he said.

"There was this bar that everyone hung out at after set and I remember coming down the stairs and seeing the two of them shooting pool together," he recalls. "I could just tell by the body language that everything had changed. She's shooting pool, shooting tequila, in a tight tank, tight jeans, over the knee boots and she's standing across from him, playing with the pool cue. All of a sudden, there was a huge shift. My stomach dropped. I literally felt like I got hit."

Sheremet said Rimes' career has suffered since they divorced. "The last hit song she had was when she was with me," he said, referring to "Nothing Better to Do," which they wrote together.