Answer:
The sonnet was a poetry of love and thus by including sonnet as a form of conversation between Romeo and Juliet, Shakespeare portrays the strong emotion between them.
Step-by-step explanation:
In Act 1, Scene 3-5, when Romeo and Juliet exchange their conversation, they exchange in sonnets. Sonnets were the poems written generally with the theme of love. In this play, Shakespeare's including this form of poem is very remarkable.
As we read the conversation exchanged between Romeo and Juliet, we see how perfectly synchronized are they, matching each other's rhyme and tune. This shows their strong bond and connection between them. When Romeo addresses his love for Juliet as a spiritual ritual, it reveals the strong emotion shared between them. Religious is considered to be the strongest emotion of all and connotating his love as a spiritual thing, it shows their strong emotional connection.