Though, as Aloise pointed out, your discussion jumped around a bit within the scene, you did hit nearly all the major parts, including Capulet’s scolding of Tybalt, the sonnet exchange between Romeo and Juliet, and the portentous lines at the end of the scene. The one part of the scene you barely touched on was Romeo’s quick heresy in his religion of Rosaline. The lines in which he notices Juliet are extremely important for understanding his motivations over the next several scenes at least: “She doth teach the torches to burn bright!/It seems she hangs upon the cheek of night/As a rich jewel in an Ethiop’s ear” (1.5.51-3). Notice how Juliet’s brightness fits within the motif of light vs. dark in the play. Remember, this a lad who creates an artificial night during the day to mope about his unrequited love. Now, here is a beauty that casts aside all darkness, a mentor for artificial light in darkness. She shines in contrast to her dark surroundings the way a star shines at night or a pearl contrasts with dark skin.
I applaud your recognition of the sonnet that organizes the first lines that include Romeo and Juliet’s first exchange. The structure of the lines does set their meeting apart from the rest of the scene. That they alternate quatrain for quatrain, for example, building on each other’s thoughts, in a form that usually expresses a single voice, does suggest a kind of affinity for one another. It also suggests that both are very familiar with the literature about love. Thus, Juliet can remark regarding Romeo’s first kiss, “You kiss by th’ book” (1.5.122). This line does connect with the book conceit in 1.3, but it also suggests that Romeo kisses by recipe, a recipe that Juliet has read. You’re absolutely correct that Juliet’s remark indicates that Romeo shares her lack of actual experience with physical love. They both just know the poetry.
