"P.S. I Still Love You" is the sequel to "To All the Boys I've Loved Before" by Jenny Han. It picks up where the first book left off, with Lara Jean and Peter's make-believe relationship becoming real. When a video of the hot-tub rumor goes viral, their new relationship becomes complicated. Things get even more complex when another boy from Lara Jean's past, John, returns to her life, reigniting old feelings and creating a new love triangle. Lara Jean must navigate a real relationship, deal with Peter's lingering connection to his ex, Genevieve, and figure out who she truly wants to be with.