: Many horror plots are set in motion by the loss of a lover or a romantic obsession gone wrong. Bram Stoker's Dracula

Sidney Prescott’s relationship with Billy Loomis subverted the trope by making the boyfriend the killer. A Nightmare on Elm Street (1984):

Hollywood has long used vampires to explore the darker side of desire: the power dynamics, the fear of intimacy, and the danger of the "bad boy." The vampire romance is the ultimate fantasy of eternal love, but the horror genre never lets us forget the cost—your humanity, your soul, or your pulse.

Modern horror is increasingly focusing on the complexities of toxic relationships. Films like Midsommar and The Invisible Man use horror elements to illustrate the suffocating nature of emotional abuse and gaslighting. In these narratives, the romantic relationship is the horror itself. This shift reflects a growing societal awareness of domestic trauma, using the genre's heightened reality to validate the experiences of survivors.

Early Hollywood understood this implicitly. The Universal Monster cycle of the 1930s and 40s is not a series of action films; they are tragic love stories.