This soliloquy explains Romeo's sentiments towards Juliet. Romeo's passion for Rosaline is shown in the play's opening sonnet. After meeting Juliet, he forgets Rosaline and modifies his language. He's more straightforward and powerful. This soliloquy contrasts Romeo's fresh sentiments for Juliet with his less powerful affections for Rosaline. He has progressed from fake, sad love to real, powerful love.
