Find out what the singer and former X factor judge told VH1′s Behind the Music after the jump.
“My bulimia was my addiction; hurting myself was my addiction. I did it every day for, like, years. Every time I had a second to be alone, I was doing something to myself. You get, like, blisters on your hands or scars on your hands, and I’d try to hide those. I think the girls could tell.”