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Shakespeare cleverly built dramatic tension in act 3, which is a turning point of the whole book, by a series of action-packed events by increasing tension and strains in relationships between the two feuding families- the Capulets and the Montagues, which lead to increased violence, confrontations fights and lots of bloodshed, that led to several deaths, which cause chaos and lot of political drama and caused Romeo to be exiled from the country and be killed if he dared set foot in the country
Juliet's soliloquy is totally contrasting the madness both families are facing and in these chaotic times, his love is still steadfast and is still everlasting and true to her beloved, Romeo and she still is maturing and "coming-of-age"
Act III of the play is the turning point in the narrative. Shakespeare builds dramatic tension by escalating the tension between the Montague and Capulet young men, with confrontations, murder, and the banishment of Romeo.
Juliet's soliloquy contrasts this, as while everyone else in the play is giving in to the tension and madness around her, she remains true to Romeo. Juliet, unlike some other characters, is growing up and rising above the conflict and tension.