The 30-year-old singer met current husband Eddie Cibrian in 2009 while filming TV movie 'Northern Lights' together and subsequently left their partners and filed for divorce and LeAnn says writing her latest album has been a "cathartic process".
She told ITV's 'Loose Women': "We were both married to other people and we went through the whole affair and thank God it turned out, it came out in my music and I really didn't set out to do that. It was very cathartic.
"Life happens and it was amazing, even though it was crappy at times, but it gave me a lot to write about and I took my time.
"I wrote nine of the 13 songs on the record. It's personal but at the same time I feel like I'm not the only one that has been through what I've been through."
LeAnn also claimed telling her own side of the story through her music has been "liberating".
She added: "I'm telling my story. I feel like there's been a piece of tape over my mouth for a while, you know growing up in this business is a weird way to grow up and you try to please everyone else and this time around I feel like I've nothing to lose by telling the truth.
And it felt very liberating.
"My single 'Borrowed' is kind of takes an in-depth look into that situation and it wasn't pretty. And I think it was so honest to that song that it kind of opened up a door."
- BANG! Showbiz