For Darkness Shows the Stars by Diana Peterfreund

Fans of Divergent will love Diana Peterfreund’s take on Jane Austen’s Persuasion set in a post-apocalyptic world.
 
In the dystopian future of For Darkness Shows the Stars, a genetic experiment has devastated humanity. In the aftermath, a new class system placed anti-technology Luddites in absolute power over vast estates—and any survivors living there.
 
Elliot North is a dutiful Luddite and a dutiful daughter who runs her father’s estate. When the boy she loved, Kai, a servant, asked her to run away with him four years ago, she refused, although it broke her heart.
 
Now Kai is back. And while Elliot longs for a second chance with her first love, she knows it could mean betraying everything she’s been raised to believe is right.
 
For Darkness Shows the Stars is a breathtaking YA romance about opening your mind to the future and your heart to the one person you know can break it.