There's going to be a graphic novel adaptation of the same material, tentatively titled Tantalize: Kieren's Story. I can't find much information about it, but Ms. Smith did mention it in a July interview with The Compulsive Reader:
"Interviewer: Do you plan on writing any more books similar to Tantalize?I'm always worried about how the artwork will affect projects like this (because so often it's for the worse), but I'll be keeping an eye out for it.
Author: At the moment, I’m working on a very similar book—a graphic novel adaptation of Tantalize, told from the point of view of Kieren, the werewolf leading man. Because the prose novel is told from Quincie’s perspective, there are plenty of new scenes and insights in the graphic version."