There isn't actually a great deal about romance in this book. However, it was notable that it was included for study along with other genres:
I consider these popular formulas to be of more complex artistic and cultural interest than most previous commentators have indicated. To substantiate this general thesis, I have chosen to deal rather intensively with a few major formulas - various forms of detective and crime stories, the western, and the best-selling social melodrama. I have not attempted to present an overall account of popular formulas or genres - the reader will quickly note such obvious omissions as all types of comedy and romance, the horror story, science-fiction, and many other important areas of popular narrative and drama. [...] Instead, the organizing principle of this book is theoretical: I have tried to define the major analytical problems that confront us when we seek to inquire more fully into the nature and significance of formulaic literature [...]. Thus, I hope the book will combine some of the advantages of generality and particularity. It develops a general methodology that can, I believe, be profitably applied to popular formulas other than those treated in this book. (2)
There isn't actually a great deal about romance in this book. However, it was notable that it was included for study along with other genres: