Remember that line:
'In spring a young man's fancy lightly turns to thoughts of love'?
It is from the poem
Locksley Hall by Alfred, Lord TennysonHere is an excerpt:
In the Spring a fuller crimson comes upon the robin's breast;
In the Spring the wanton lapwing gets himself another crest;
In the Spring a livelier iris changes on the burnish'd dove;
In the Spring a young man's fancy lightly turns to thoughts of love.
Then her cheek was pale and thinner than should be for one so young,
And her eyes on all my motions with a mute observance hung.
And I said, "My cousin Amy, speak, and speak the truth to me,
Trust me, cousin, all the current of my being sets to thee."
On her pallid cheek and forehead came a colour and a light,
As I have seen the rosy red flushing in the northern night.
And she turn'd—her bosom shaken with a sudden storm of sighs—
All the spirit deeply dawning in the dark of hazel eyes—
Saying, "I have hid my feelings, fearing they should do me wrong";
Saying, "Dost thou love me, cousin?" weeping, "I have loved thee long."
Love took up the glass of Time, and turn'd it in his glowing hands;
Every moment, lightly shaken, ran itself in golden sands. Follow that hyperlink above to read the poem in its entirety.