At this moment, the audience is aware of several crucial facts:
1. The Love that Dooms: The audience knows from the opening prologue that the love between Romeo and Juliet will ultimately lead to their untimely demise. While Romeo and Juliet are discovering their infatuation, the audience understands the tragic consequences of their passion, which creates a sense of foreboding and tension.
2. Montagues and Capulets' Feud: The longstanding feud between the Montague and Capulet families is known to the audience from the onset. They are aware of the deep-rooted animosity and violence between the two families. This knowledge intensifies the dramatic irony as Romeo, a Montague, and Juliet, a Capulet, fall deeply in love, oblivious to the consequences their relationship will have on both families.
3. Parents' Ignorance: Romeo and Juliet's parents are unaware of their children's blossoming love. The audience's knowledge of this secret relationship adds to the dramatic irony as the parents continue to make plans and decisions that unknowingly contribute to the tragedy.
By establishing this dramatic irony in Scene 1, Shakespeare creates a profound sense of suspense and pathos. The audience is captivated by the intense love between Romeo and Juliet, while simultaneously being aware of the impending doom that awaits them. This contrast between their passion and the knowledge of their tragic fate heightens the emotional impact of the play.