In the first offering in Jenny Han’s trilogy, To All The Boys I’ve Loved Before (2014), Lara Jean pens 5 letters to her crushes with the intention of sending none—she simply wants to get the overwhelming feelings that come with having a crush on someone off her chest. However, when her younger sister Kitty mails off the letters to each crush, Lara Jean finds herself having to deal with the rapidly unfolding issues that ensue after each crush reads her innermost longing about them. Her motivation to write love letters (even without any intention of sending them) is understandable whether you’ve written one or not: I have these big feelings for someone and they are so big that I feel I might burst if I don’t spill them somewhere outside of me.