Board Thread:Spoilers!/@comment-4975807-20130307031116/@comment-86.157.127.0-20130308215934

ChocolatEyes613 wrote: 86.157.127.0 wrote: That and Belle's kiss started to break the Dark One curse proving she is his True Love. Belle is Mr. Gold's True Love, because she inspires him to be a better person.... not because of some kiss. She brings out the kind and gentle man, he once was.

Thats true to she brings out the man he once was before the curse corrupted him. Milla and even Bae couldnt do that has the curse twisted his love for Bae and fed off his anger twords Milla. When she left the cure got worse hence his more monstrous appearance.