Ruthless Vows was so good. At first, I thought it would be boring and slow-paced because I was unsure where it would go. After reading though, it was interesting and fast-paced. I loved the parallels to the first book which is what kept me interested, The one gripe I had is that in the duology as a whole, we get to see very little of the couple together, and most of it is them trying to find their way to each other. 

Looking back I would rate this book lower on a reread. I feel that together they could have been a single book with some of it cut out, but I still enjoyed it.