Disclosure: I have not read this series so I cannot say how well it fits or expands on it.
Cup of Life was a short and quick story of Micah's love for Nadine. Throughout the story there are many ways that we can see just how much Micah loves her and what lengths he would go to in order to keep her by his side forever. The flashbacks, while normally annoying to me, were done beautifully - in a way that they became more than just another look at the past. They actually seemed to expand upon it and enhance the emotions of it.
Even by itself, this was a great story. I imagine that to readers that have grown to love these characters throughout the story would love it even more.
*This book was received in exchange for an honest review*