Last Goodbye by Holly C. Webb

Cassie North and Evan Miller were best friends almost all their lives, until a stupid argument and stubborn pride tore them apart.
Cassie’s world comes crashing around her when she is diagnosed with a rare form of Leukaemia. Despite their differences and the time that has passed, Evan is there for his best friend when she needs him most.
As Cassie fights the battle of her life, she finds the spark she had once felt for Evan reignited inside her. As they grow closer, Cassie realises hat Evan is actually the love of her life, but she also knows she could be living on borrowed time.
Can Cassie win this fight and get to live her happy ever after? Or will fate pull them apart once more, and she will have to say her Last Goodbye?