Yikes! A scary moment for Demi Lovato has she appeared on 'Good Morning America' when she flubbed the line to her new single 'Heart Attack'. 

According to PopCrush seemed to get a little tongue-tied, but like the trooper she is she totally pulls through and knocks out a killer performance. Critics of Lovato were quick to jump on her for the flubbed line, but we aren't sweating it because we know that mistakes happen. Rock on Demi.