All Our Broken Pieces by L.D. Crichton
You can't keep two people who are meant to be together apart for long...
Lennon Davis doesn't believe in much, but she does believe in the security of the number five. If she flicks the bedroom light switch five times, maybe her new LA school won't suck. But that doesn't feel right, so she flicks the switch again. And again. Ten more flicks of the switch and maybe her new stepfamily will accept her. Twenty-five more flicks and maybe she won't cause any more of her loved ones to die. Fifty more and then she can finally go to sleep.
Kyler Benton witnesses this pattern of lights from the safety of his tree house in the yard next door. It is only there, hidden from the unwanted stares of his peers, that Kyler can fill his notebooks with lyrics that reveal the true scars of the boy behind the oversize hoodies and caustic humor. But Kyler finds that descriptions of blond hair, sad eyes, and tapping fingers are beginning to fill the pages of his notebooks. Lennon, the lonely girl next door his father has warned him about, infiltrates his mind. Even though he has enough to deal with without Lennon's rumored tragic past in his life, Kyler can't help but want to know the truth about his new muse.