I like the overall concept for this book. It is different and imaginative. However, I feel that the concept would be better realized with more length added to the story. Parts of the book seem a bit rushed, and thus less believable.
The story really needs another proofread. There are several times that words are misspelled; the wrong tense, or the incorrect version of similarly sounding words (i.e. passed rather than past), is used.
The stories of love, family and fate still weave throughout the book in a more abridged form. The more intimate moments provide steam and interest. The transformations that soulmates engender in one another is obvious and very believable. Devotion and love make butterflies of us all.
While I am not in love with the end result, I like it well enough.