LeAnn Rimes' new song was written through "a lot of tears" because of the sensitive subject.

The country singer's new single 'Borrowed' is based on her affair with her now husband and Brandi Glanville's ex, Eddie Cibrian.

Rimes says the track was difficult to pen, telling Extra: "I carried that song and that title around with me for about eight months. I was afraid to write it because I knew I had to be incredibly personal… when I did,  it was through a lot of tears."

Rimes says her husband's reaction to the song was encouraging, despite the difficult feelings the lyrics brought back for them both.

She gushed: "He is always so supportive, I actually was scared to put him in the song because it does talk about how we both hurt each other. There was a moment where we did have some hurt between the two of us that we had to accept and get over and move forward. And that’s made for an amazing relationship.”

30-year-old Rimes checked herself into a treatment facility back in August to address her anxiety issues, and has previously spoken about her struggle with stress.

She revealed: "I have always had people around me… which was half of what I was working through, what do I do with myself when I’m off the road. I did 500 shows in three years. When I stopped, I would get super anxious.."