Explain how the conceit of dreaming unifies the first stanza.

In the poem's first stanza, the speaker compares his state before his current relationship to a state of dreaming. He claims that he and his lover were both like the Seven Sleepers, unaware and not fully conscious--much like the babies he compares them to in the poem's first two lines--until they found one another. He admits in the poem's final two lines that he had relationships before this current one, but he explains that these were just illusions, "dreams" of what he was really looking for, which is the woman he is speaking to now (line 7).