Hard to rate this one. When it comes to Jeaniene Frost's books lately I have liked them but nothing that blew me away. The main reason behind this is I feel her books are too similar no matter the characters. The original Night Huntress series with Kat and Bones is hardly different from Vlad and Leila as a couple. Not the individual personalities though there are similarities but in how the relationships go between these couples. Same issues, same problems, same actions, etc. He tells her this, she says no I will do this, he gets angry, she does it anyway, stuff hits the fan, so forth. 
 So that brings me to Eternal Kiss and why I gave it a slight hump to 4 stars compared to my usual 'It was an entertaining read' of 3 stars. It's because Kira acted like someone her age compared to Kat and Leila. She wasn't over the top and her and Mencheres acting like actual adults and worked together on something. Only one book and I probably already hold her higher than Kat (who never seemed to change even after getting older and supposedly wiser) and Leila who is a bit over the top. 
 Hence why I gave this one four instead of the usual three. It earned it by being at least a bit different in the couple approach. Also nice reading a book on Mencheres the badass of the Night Huntress world. Been wanting to get one of Bran in Patricia Briggs's Mercedes series for similar reasons. They are intriguing figures that could have rather interesting stories if told.