The Secret Year by Jennifer R. Hubbard
(No cover yet)
Seventeen-year-old Colt has been sneaking out at night to meet Julia, a girl from an upper-class neighborhood unlike his own. They’ve never told anyone else about their relationship: not their family or friends, and especially not Julia’s boyfriend. When Julia dies suddenly, Colt tries to cope with her death while pretending that he never even knew her. He discovers a journal Julia left behind. But Colt is not prepared for the truths he discovers about their intense relationship, nor to pay the price for the secrets he’s kept.
This one sounds really good. The whole premise of the book sounds heart-wrenching and beautiful. But it SO far off! It's a year away! Maybe more. Jeez, I don't know if I can wait that long, haha. But I'll have to! But I'm sure it'll be worth the wait!