A Family Affair

This is my first Harper Bliss book... Saying that, I may have started off with the wrong book.
I am trying to rate this book, not according to its story, but the way it's written and the development of the characters etc.
I was drawn to this book, and although I hate the cheating trope, as I was cheated in a couple of my past relationships, I didn't feel the need to DNF it. I read it in a go, and I liked the way the relationship developed, the awakening of the feelings, and the idea that not everything was easy. And this was a solid 4 star for me. Until, the ending...

SpoilerThat been said... the ending made me through the book in the air... Not even a cheesy movie would dare to give that ending.