Romeo and Juliet is a play by William Shakespeare, written about 1594–96 and first published in an unauthorized quarto in 1597. An authorized quarto appeared in 1599, substantially longer and more reliable. A third quarto, based on the second, was used by the editors of the First Folio of 1623. The characters of Romeo and Juliet have been depicted in literature, music, dance, and theatre. The appeal of the young hero and heroine—whose families, the Montagues and the Capulets, respectively, are implacable enemies—is such that they have become, in the popular imagination, the representative type of star-crossed lovers.

Source: Britannica