You Are Not Here by Samantha Schutz
Annaleah and Brian had something special -- Annaleah is sure of it. When they were together, they didn't need anyone else. It didn't matter that it was secret. All that mattered was what they shared.
And then, out of nowhere, Brian is killed in an accident. And while everyone else has their role in the grieving process, Annaleah finds herself living on the outside of it, unacknowledged and lonely. How can you recover from a loss no one will let you have?
It sounds really good and I think it's written in verse. It's published October 2010 by Scholastic (US).
You can check out the author's blog here