Answer:
The figurative language used in the sentence "We were a fresh page on the desk filling in the blanks as we go" is metaphor.
Explanation:
A metaphor is a figure of speech that compares two unlike things, without using the words "like" or "as."
In this sentence, the speaker is comparing the relationship to a blank page.
This metaphor suggests that the relationship was new and unformed, and that the two people were still learning about each other and what they wanted from the relationship.