A young adult novel dedicated to the perfectionist self that we all hide inside us.

Sadie Wynn is the model of the perfect student: school president, top of her class, and a "very good girl," according to her teachers. It's not easy to keep her image so flawless, but she has found a trick for that: she vents all her negative thoughts by writing sarcastic emails that, of course, she would never dare to send.

Most of these are addressed to her biggest rival since childhood: the utterly annoying co-president of the school, Julius Gong.

You crave attention, you’re selfish and unbelievably arrogant. Also, your hairstyle is ridiculous. I hope your comb breaks and you run out of the expensive products you use to make your hair look smooth…

Sadie can’t hold back in her emails because she knows they’ll never be read… until they are accidentally sent! Overnight, her carefully crafted image collapses. Now, everyone at school knows what she really thinks of them, and they don’t hesitate to tell her what they really think of her.

But, amidst the chaos, someone begins to appreciate the “real” Sadie – Julius, the boy she hates more than anyone else…

“A sweet story full of charming characters, clever dialogues, and hilarious scenes. It will steal your heart!” − Kirkus Reviews

“Simply amazing. Honestly, I have never felt such great identification while reading a book.” − drizzleandhurricanebooks.com

“What I Shouldn't Say captivated me. So sensitive and romantic, it really captures the essence of enemies to lovers.” − prettylittlememoirs.com