There are several factors that make 'Romeo and Juliet' a novel. Firstly, the narrative structure is well - defined. It has a beginning, middle, and end. At the start, we are introduced to the feud between the two families and the situation in Verona. Then comes the development of Romeo and Juliet's love, which is filled with secrecy and passion. In the middle, there are various events that test their relationship, such as Romeo's banishment. And finally, the tragic end. Also, the detailed descriptions of the settings, like the Capulet's orchard where Romeo and Juliet meet, are typical of a novel. The in - depth exploration of themes like love, fate, and family also contribute to it being considered a novel.