No Fear Shakespeare: Sonnets: Sonnet 18
However, due to the difference in genre readers of Sonnet 30 are only provided with the sole perspective of Spenser whereas Shakespeare presents both Romeo's and Juliet's views through dialogue.
Sonnet 116 and commentary - Shakespeare's Sonnets
The significant difference is that at the end of the scene, Shakespeare presents Juliet accepting Romeo's yearning for a kiss as she states 'Then have my lips the sin that they have took.' However, Sonnet 30 is still in the course of Spenser's 'journey' of love and as marked by the end of the poem, she has not yet accepted.
Similar metaphorical images appear in many famous poems including Shakespeare's "Sonnet 73." The metaphor is the most basic device poets use to convey meanings beyond literal speech (Guth 473).