 Booth's interpretation suggests that the lady struggles to believe that she actually believes the lies that she pretends to believe.Boothe says line 7 simply shows line 8 as a truth "thus, we are both liars, she in pretending faithfulness and I in pretending youth", emphasizing the mutuality of the relationship.It reiterates their mutual deception and recognition of said deception, believing all that they hear from each other and all that they tell to each other.