Your heart would have responded
Gaily, when invited, beating obedient
To controlling hands
Although the final command issued by the thunder means “control” as in “practice self-control” or “restrain desires,” the “controlling” the speaker describes here seems, ironically enough, more like erotic domination. The lover’s heart is envisioned as a ship that responds beautifully to such domination — or “would have” if the speaker’s fantasy had been fulfilled.
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