by Barry Jonsberg. This book is one of my all-time favourites. The story is narrated by Calma, a Year 11 student who tells us fairly early on that she is unreliable narrator. She is also a very believable one, and she relates her tale in a clever voice full of wit and humour.
This is a story about family, friends and jumping to conclusions. It's funny, relatable and very, very readable, and manages to combine realism with a good dash of romance. As an added bonus, the reader learns quite a lot about English (in which Calma excels) along the way.
Published by Allen & Unwin in 2004, It's Not All About You, Calma was shortlisted in the CBCA Awards, Older Readers, in 2005. If you haven't read it, I highly recommend you do.