Demi Lovato Blames Her Problems on Bullies

In her first televised interview since her three-month stint in rehab late last year, Disney star Demi Lovato will appear on Friday's "Good Morning America."

In the interview with ABC's Robin Roberts, Lovato opens up about being a "cutter," struggling with depression, and an eating disorder -- which she says stemmed from being bullied as a child.

Demi Quits "Sonny with a Chance"

The actress tweeted a message to her fans on Tuesday, saying she was "excited to REALLY share my story with you all..."

Watch a preview of Demi's interview...