Question

Which two lines or sets of lines in the poem suggest the preciousness of love?

Answer 1

{When first thine earnest eyes with mine were crossed,} And love called love. 

Answer 2

for plato users these are incorrect, i don't know the correct ones but this at least will narrow down the options

When first thine earnest eyes with mine were crossed,

And thus, I cannot speak  Of love even, as a good thing of my own: