Sep 14, - 7 Excellent YA Sci-Fi Romance Series. The Delirium series by Lauren Oliver: Delirium, Pandemonium, and Requiem. The Jenna Fox Chronicles series by Mary E. The Chemical Garden Trilogy by Lauren DeStefano: Wither, Fever, and Sever. The Across the Universe series by Beth Revis: Across the Universe, A Million Suns, and. n the world of the Lux, secrets thrive, lies shatter, and love is undeniable. #1 New York Times, USA Today, and internationally bestselling author Jennifer L.