One day the Devil appeared to him.
"Since you fell in love with this fair nun, I see you are a friend of mine," said the Devil.
The young man had not known this, but he replied:
"Say rather that I will be your friend if you help me get possession of this nun I love."
"Very well," said the Devil, "but you will have to make a bargain with me."
"What is it?" asked Fernâo, rather anxiously.
"Grant me your solemn pledge that you'll give me all your children," responded the Devil.
"Agreed," said Fernâo.
After that he saw much of the Devil. The nun, however, was as devout as she was beautiful. She refused to break the vows she had made and flee with the Flemish youth. She firmly resisted both him and the Devil.
"You are not a true friend to me after all," said Fernâo to the Devil sadly.