Title The lover's dictionary / David Levithan.

SRP 2013 REVIEW: This book, called a novel but one which reads very much like Richard Siken poems, is subtle and quietly poignant. The structure is unique, and the lack of detail or linear timeline adds to its style and success. It deals very well with the mundane, conflicting and contradictory significant moments and beats in relationships.

SRP 2012 REVIEW: It's a very well written book about a relationship between the narrator and a woman he meets. It's not told in the usual linear way, so it jumps around. But it works. It's a quick read, and I recommend this to everyone.