The View from the Top by Hillary Frank
Tobin, Matt, Lexi, Jonah, and Mary-Tyler are all high school kids, most of who are deciding what to do with their lives after high school. And Anabelle is the girl who holds them together. Anabelle feels so very alone while everyone vies for her attention in their own ways. And while she know that it is a very minor ordeal in the grand scheme of things, she also feels that there is no one who feels quite the way she does.