Seventeen-year-old nurodivergent and nonbinary Lark pretends that they are the creator of a viral thread that their ex-best friend, Kasim, accidentally posted onto their Twitter account, declaring his unrequited love, but living a lie takes its toll on Lark, forcing them to deal with their own messy emotions.

Lark Winters wants to be a writer, and for now that means posting on their social media accounts--anything to build their platform. When former best friend Kasim accidentally posts a thread on Lark's Twitter declaring his love for a secret, unrequited crush, Lark's tweets are suddenly the talk of the school--and beyond. To protect Kasim, Lark decides to take the fall, pretending they accidentally posted the thread in reference to another classmate. It seems like a great idea: Lark gets closer to their crush, Kasim keeps his privacy, and Lark's social media stats explode. But living a lie takes a toll--as does the judgment of thousands of Internet strangers. Lark tries their best to be perfect at all costs, but nothing seems good enough for the anonymous hordes--or for Kasim, who is growing closer to Lark, just like it used to be between them . . . In the end, Lark must embrace their right to their messy emotions and learn how to be in love.