A speaker is watching a relationship end and refusing to accept it. The opening suggests the other person has quietly rewritten their shared story, pushing "then" and "now" as far apart as possible. The speaker knows the memories will fade until only "the faintest trace" is left, but doesn't want to let them go.
The poem's central question, "can believing a lie make it a truth?", is its most honest moment. The speaker admits they are choosing to believe the lie that their ex still loves them, and the heart beside them each night seems to belong to someone else. There is something both stubborn and sad in that admission.
The mood is quiet, wistful and a little raw. The short, broken lines feel like hesitant breathing. By the end, even imagining the other person with someone new doesn't change anything: the feeling is "still in my chest."