Which line from "to my dear loving husband" contains a metaphor

"My love is such that rivers cannot quench" (Line 7)

Explanation:

"My love is such that rivers cannot quench" (Line 7) contains a metaphor. Metaphor is a  literary device that shows the figure of speech of the word or phrase that is applied to an object or action but which can't be literally applied to. It is more like a representation or symbol of the thing talked about. Therefore, in the line "My love is such that rivers cannot quench", the wife is comparing the love she has for her husband to b like that of an unquenchable thirst, that not even the whole river can satisfy. In reality, this isn't possible nor is it a valid point. By using this comparison, the wife declares her unending love for her husband.