"Between having a perfect-at-everything older brother and being teased about his Tourette's syndrome, Spencer is used to feeling like the weird one. But the moment Hope steps out of the moving van next door, Spencer feels different. Like his neighborhood is an entirely different place, now that he has a friend. Like he could tell Hope anything. Like he finally belongs. And then they grow up. Life gets messy, and labels like "friend" get messy, too. Through sibling feuds and family tragedies, new relationships and broken hearts, the two grow together and apart, and Spencer, an aspiring scientist, tries to map it all out using his normally trustworthy system of taxonomy. But unlike science, love doesn't always fit into easy-to-manage boxes. And if Spencer can't figure it out soon, he risks losing Hope completely."--Provided by publisher