Subject: affection breaking between hearts.
Model: glass that has been broken.
Ground: the difficulty of restoring the former condition after damage.
An audience can vividly imagine broken glass and transfer that concrete experience to the fragility of affection. The comparison gives emotional weight to the claim.
The verse employs rhetorical intensification. It need not be read as the literal proposition that every damaged relationship is impossible to mend.
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Subject: affection breaking between hearts.
Model: glass that has been broken.
Ground: the difficulty of restoring the former condition after damage.
An audience can vividly imagine broken glass and transfer that concrete experience to the fragility of affection. The comparison gives emotional weight to the claim.
The verse employs rhetorical intensification. It need not be read as the literal proposition that every damaged relationship is impossible to mend.