Romance
The romance novel is a literary genre developed in Western culture, mainly in English-speaking countries. Novels in this genre place their primary focus on the relationship and romantic love between two people, and must have an "emotionally satisfying and optimistic ending."[1] Through the late 20th and early 21st centuries, these novels are commercially in two main varieties: category romances, which are shorter books with a one-month shelf-life, and single-title romances, which are generally longer with a longer shelf-life. Separate from their type, a romance novel can exist within one of many subgenres, including contemporary, historical, science fiction and paranormal. Wikipedia