Peter and Lara Jean are the main couple of the To All The Boys I've Loved Before series.
Lara Jean had strong feelings for Peter since middle school, although she eventually gives up on him and tries to completely stop loving him by writing him a letter. After a series of unfortunate events, they end up fake-dating, which was Peter’s attempt to get his old girlfriend back. When she realizes that she had fallen for him again, she tries to suppress her feelings for him at first but gives in when Peter confesses to her. He ends up being her boyfriend.