Boy Meets Boy by David Levithan
This was probably one of the very first YA books I ever read, if not the first (it was either Levithan or Sarah Dessen’s books, although Kevin Brooks probably preceded them all. Anyway, one of the first), and it had such an impact on me. It’s absolutely beautiful and brilliant and although I think I like The Realm of Possibility just that little bit more, this book will always mean a great deal to me (as all books do, in their way).
Will Grayson, Will Grayson by John Green and David Levithan