One True Pairing or a Non-One True Pairing?

I will be decided on to see what type of ship would be One True Pairing or a Non-One True Pairing (Not a good pairing/couple/ship). Also, there will be a little summary on explaining why it is or is not good or not good of a pairing.
Just a little warning though, this book is based on my opinions so, please don't get mad at me for not liking a certain type of pairing.