Song Meaning
This song plays with the idea of love's fluctuating intensity, framing it not as a decline, but as an ever-increasing, almost unpredictable force. Harry's initial declaration, "Yesterday I loved you / As never before," sets up a seemingly straightforward romantic sentiment. However, this is immediately undercut by a confession of change, suggesting a love that grows so rapidly it defies linear progression. The narrator warns, "My heart cannot be trusted," introducing a playful, almost anxious uncertainty about the very nature of his affections.
Larken’s response introduces a crucial shift in perspective, moving from Harry’s internal experience to an external observation of how perception itself can be deceptive. She notes, "Now I see what tricks my eyes can play," implying that her initial perception of Harry’s love might have been flawed. Harry then doubles down on his escalating affection, claiming he "must have been utterly blind" yesterday, and now finds her "so much lovelier today." This creates a dynamic where love isn't just felt, but constantly re-evaluated and amplified.
The most striking element is the song's temporal paradox. Harry insists his love grows exponentially, stating, "Tonight I love you less / Than I will tomorrow morning!" This isn't a lament of fading love, but an ecstatic, almost dizzying anticipation of future adoration. The repeated refrain, "My heart cannot be trusted / I give you fair warning," becomes a mantra for this overwhelming, uncontainable emotion. The overlapping vocals in the final section, with Larken's "In a little while, just a little while" against Harry's escalating temporal claims, highlight the shared, yet individually experienced, rush of this volatile affection.
Ultimately, the lyrics are effective because they capture the exhilarating, disorienting feeling of falling deeper in love. The craft lies in the subversion of typical romantic tropes; instead of mourning a loss, the song celebrates an ever-increasing, almost uncontrollable passion. The playful warnings and shifting perspectives make the listener question the stability of love, only to be swept up in the narrator's genuine, if bewildering, adoration.