Reading this Novella is not a must to the series. In fact the 6th book quickly brushes up on these events. However... for fans of the series it is nice. We learn how Oliver copes with Schuyler's departure and we meet Freya, which is nice.. and I think I even enjoyed this more. Since I already know Freya's character from Witches of East End. Understanding Allegra and Charlie's relationship and how it feel apart is maybe the coolest of the stories. Since at this point of the series we do not know a lot about Allegra/Gabrielle. However my favorite story is Schuyler and Jack's wedding. Especially, with the drawings. So, like I said this book is an absolute treat to fans of the series but you are not missing anything too important."The Blue Bloods have powers beyond human comprehension: strength that defies logic, speed that cannot be captured on film, the ability to shape-shift, and more. But in matters of the heart, no one, not even those immortal vampires, has total control. In Bloody Valentine, part of the best-selling Blue Bloods series, author Melissa de la Cruz offers three tantalizing stories that delve deep into the love lives of the all-powerful vamps (and their Red Blood friends) from New York's Upper East Side. Might a witchy new girl help cure Oliver's broken heart? How did Allegra fall in love with a human? Will Schuyler and Jack finally be bonded?
Romantic and sensual, Bloody Valentine reveals the undying love, the hope and devastation, and the lust and longing that have defined the Blue Bloods throughout history. Prepare to be swept off your feet."