New kinship patterns are the main drama factor in the recently emerging subgenre of the erotic romance: stepbrother erotica. These largely formulaic New Adult novels are currently booming in the US-based market of electronic literature. Stepbrother novels usually feature a newly married couple, the parents, aiming to build a blended family whilst their adolescent offspring fight illicit desires towards each other as they are now, in their parents’ eyes, virtually brother and sister. Much drama ensues, but ultimately, love conquers all, and the illicit becomes accepted, the extraordinary becomes ordinary, and the abnormal is normalized. I discuss the romantic formula of heterosexual stepsibling relationships, arguing that stepsiblings in love is not simply an erotic or exotic transgression of the incest taboo, but rather, the new normal in romance literature. As such, it continues and amends the ever-developing formulas of romantic literature by deliberately colliding family with romance, yet overcoming it. This romantic formula does not only provide a pattern for writers to employ and commodify but also enables readers to be seen as active agents in their everyday uses of literature.