I have read it directly after the first book of the series because I got them together and I knew that if I wouldn't have read it together I would probably never read the second. Besides, I was curious what became of Henry. 
 Generally you can read my review of Royally Screwed as a review of this piece too. 
 I confess, it isn't a high literature but I would like to know the story of Ellie and Logan (known from the first part of series), so if I don't forget I am going to read a third part when it will be available. ;-) I think it says something about these books. 
 PS There is a bonus for fans of Austen, Bronte and so on. The main heroine loves these books and speaks of them a few times, she is searching her Colonel Brandon ;-)