The Art of Being Indifferent (The Twisted Family Tree Series #1)
Brooke Moss, Meggan Connors

Drew Baxter's got life on a string, or so everyone thinks. Son of the town mayor, swim team champion, and the hottest guy on campus. Little does everyone know that life at Drew's home is dark, dangerous, and only getting worse.
When partnered together in a tutoring assignment from hell, Posey and Drew are surprised to find how much they have in common. Despite their need to keep what's going on under the surface a secret from the world, it becomes clear they know each other better than anyone else in the world can. Now Posey and Drew have to find a way to exist in a town that wants to keep them apart, and in a circle of classmates that wants them to stop blurring the social lines.
Above all, Drew and Posey need to escape the madness of their abusive parents, before they drag them down forever.