Disappointing Novel

At the beginning of this novel I had no idea The hero would betray the heroine, That is not my favorite plot, matter of fact, it is now my least favorite. The cover and the synopsis were fastidiously written. Neither gave this away. I had no idea it was happening. Two thirds of the way through I think the author thought Damn! This has to end somehow, but how? The next time I see this author’s name I will not take any trouble to buy her book, as a matter of fact, I will boycott it, thanks to this catastrophe. Wait a second. She is turning things around again. More later, I only have two chapters left to go.