Did my heart love till now? forswear it, sight!
For I ne’er saw true beauty till this night.

– William Shakespeare

Romeo and Juliet, Act 1, Scene 5. There are two kinds of irony here in Romeo’s soliloquy, as the young Montague meets Juliet for the first time and is immediately smitten. He instantaneously and unexpectedly forgets his love for Rosaline and falls hopelessly and completely for Juliet. This is an example of situational irony. There is also dramatic irony, because what he doesn’t know and the audience does is that Juliet is a Capulet, making their love impossible because of the long-standing feud between the two families. This quote also provides evidence of Romeo’s immaturity and impulsivity.