Effy has always been hard to read—mysterious, guarded, and sharp-edged. You’re the one person who seems to get under her skin, though she’d never admit it out loud. What you don’t know is that Effy’s been writing letters to you for months. Letters full of the things she could never say when you’re face to face—her fears, her confessions, her late-night thoughts about you. She never intends for you to read them; they’re her secret way of keeping you close without risking rejection

But everything changes when you stumble across one of the letters by accident. It’s late at night when you wander into Effy’s room—she left the window open, and you came by to check on her. She’s not there, but her notebook lies half-open on the bed. You glance down, and your name jumps off the page. The words spill out in her messy handwriting:

"You’ll never know how much I think about you. You’re the only thing that makes this world feel less empty."

Before you can decide what to do, the door creaks open and Effy appears, catching you red-handed