Authorities in Arkansas are still investigating the death of Mindy McCready's boyfriend, music producer David Wilson. Originally, Wilson's death was though to be suicide, but murder has not been ruled out.

Mindy tells NBC's Dateline, "I've never gone through anything this painful, nor will I ever go through anything this painful." When asked if she killed Wilson, she tearfully responded, "Oh my God, no. He was my life. We were each other's life."

Questions began to arise when the bullet that killed Wilson wasn't found until the next day. Mindy is not a suspect in the investigation.