Empty my heart of thee—
Medical metaphor
The heart has multiple arteries—she's saying this person is her only lifeline. Medically impossible, emotionally exact.
Baltic Sea
The Baltic is one sea, but contains many billows (waves). One thing made of many parts—like how one person contains her whole identity.
Mathematical logic
She's running the equation: me minus you equals nothing. The math of total dependence.
Mathematical logic
She's running the equation: me minus you equals nothing. The math of total dependence.
Root/tree logic
No root = no tree. No thee = no me. She's making the dependency grammatically visible through rhyme.
Root/tree logic
No root = no tree. No thee = no me. She's making the dependency grammatically visible through rhyme.
Cosmic theft
Eternity has pockets—and losing this person is pickpocketing God. The scale jumps from personal to cosmic in one line.