A Sense of the Infinite by Hilary T. Smith
It’s senior year of high school, and Annabeth is ready—ready for everything she and her best friend, Noe, have been planning and dreaming. But there are some things Annabeth isn’t prepared for, like the constant presence of Noe’s new boyfriend. Like how her relationship with her mom is wearing and fraying. And like the way the secret she’s been keeping hidden deep inside her for years has started clawing at her insides, making it harder to eat or even breathe.
But most especially, she isn’t prepared to lose Noe.
For years, Noe has anchored Annabeth and set their joint path. Now Noe is drifting in another direction, making new plans and dreams that don’t involve Annabeth. Without Noe’s constant companionship, Annabeth’s world begins to crumble. But as a chain of events pulls Annabeth further and further away from Noe, she finds herself closer and closer to discovering who she’s really meant to be—with her best friend or without.