The black dagger brotherhood books all follow a specific formula. Namely guy/girl have issues, but when together they manage to work through them which not only helps the two, but also helps the Brotherhood in its quest against the Lessers. Some books though stand out because the main characters are more interesting. This is one such book. 
 Butch is a human caught in a Vampires world. Not only is the woman he loves a Vampire, but his best friend in the whole world Vicious is as well. Butch and Marissa are a cute pair, but what makes this book great is really the interaction between Butch and V. The two of them aren't used to being close to people and watching the two of them let down barriers to help each other is really fun. As well, their sarcastic humor will have you laughing out loud at times. 
 Though you could read the book by itself, I wouldn't recommend it as you won't get some of the references that help to deepen the story.