Even a glance from a familiar soul does not remain faithful; how can the willow branch be anything but the stranger's green?

This profound couplet speaks to the devastating pain of betrayal, even when the betrayal comes in the guise of familiarity. The poet questions how even a glance from a beloved person—someone who should be your greatest confidante—can lack loyalty. The second line uses the imagery of 'stranger's greenery' to highlight that the beloved's gaze, though physically close, was emotionally distant and foreign. It captures the heartbreak of realizing that trust was merely an illusion.