Delirium

Delirium is a dystopian young adult romance novel written by Lauren Oliver, published in 2011 by HarperCollins under its HarperTeen division. The story focuses on a young woman, Lena Haloway, who falls in love in a society where love is seen as a disease. Delirium is the first novel in a trilogy, followed by Pandemonium (2012), and Requiem (2013).