The Last Little Blue Envelope by Maureen Johnson
Months later, a mysterious boy contacts Ginny from London, saying he's found her bag. Finally, Ginny can finish what she started. But instead of ending her journey, the last letter starts a new adventure—one filled with old friends, new loves, and once-in-a-lifetime experiences. Ginny finds she must hold on to her wits . . . and her heart. This time, there are no instructions. (Book 2)
Jasper takes him to his secret glade, where Charlie witnesses Jasper's horrible discovery. With his secret like a brick in his belly, Charlie is pushed and pulled by a town closing in on itself in fear and suspicion. He locks horns with his tempestuous mother, falls nervously in love, and battles to keep a lid on his zealous best friend. In the simmering summer where everything changes, Charlie learns why the truth of things is so hard to know, and even harder to hold in his heart.