AceShowbiz -

There have been many speculations about the reasons behind Blake Shelton and Miranda Lambert's divorce, including their cheating rumors. Recently, Blake's alleged mistress Cady Groves told In Touch magazine what really went on among her, Blake and Miranda.

"Their marriage was over a long time ago," Cady revealed. "If people knew what really happened, the world would explode." Though Cady didn't deny having an affair with Blake, she disagreed if she was the main cause of their divorce. "This is too much, I'm going to have a nervous breakdown," she added. "Blake and Miranda are letting me take all the bullets. It's wrong."

The 26-year-old singer admitted that she never intended to hurt Miranda, who has been her friend for years. "I love Miranda," Cady said. "Miranda and I became friends when I was 21." Despite their friendship, Cady was apparently infatuated with Blake so that she didn't think about Miranda's feeling. "When you love someone, it doesn't matter if they run over your heart with a truck and shoot you in the face - you forgive them. I want to lie to protect him," Cady confessed.

Cady and Shelton allegedly began their affair in August 2011 when she invited him to appear as a cameo in her "This Little Girl" music video. A friend of Cady told the magazine, "She told us that she had sex with him and said they did that for at least a year."