I made this for a contest, but YT pulled it. for the wrong reasons and i couldnt win my dispute... SO here is the story line
The Corpse bride is in love with Johnny... but before they get married she has to confess who her parents were, Jack skeleton and Sally. She loved her mother dearly but her father was a creep.
So now johnny is confused and wants to see this other girl instead... but when he realizes how much the Corpse bride needs him he stays.
TCB has always been ashamed that her father killed her mother and was afraid of his blood in her system.
so in order to give up his blood line she gives the right to marry to johnny and then kills her self.