How does the author foreshadow or hint at the changes that will occur in juan’s life

First of all Im gonna have to read the story which I don't which book it is.

But here is a helping hint.

Foreshadowing is a hint that an event in the future may take place, for example if you saw a kid going down a big hill, and he found his brake wasn't working you could foreshadow that he may crash.

boccaccio employs the voice of his narrator dioneo to represent his ideas on the tension between masculinity and femininity.  while dioneo excites the members of the brigata and recognizes women for their unique skills and independent ideas, he concludes the decameron with a story reminiscent of the society from which these young aristocrats escaped, revealing misogynistic overtones.  dioneo boccaccio is able to explore the gender disparity which is inherent in 14th century florentine society.