Why should you swear I am forsworn,
Since thine I vowed to be?
Lady, it is already morn,
And 'twas last night I swore to thee
That fond impossibility.

Have I not loved thee much and long,
A tedious twelve hours' space?
I must all other beauties wrong,
And rob thee of a new embrace,
Could I still dote upon thy face.

Not but all joy in thy brown hair
By others may be found;—
But I must search the black and fair,
Like skilful mineralists that sound
For treasure in unploughed-up ground.

Then if, when I have loved my round,
Thou prov'st the pleasant she,
With spoils of meaner beauties crowned
I laden will return to thee,
Ev'n sated with variety.

Richard Lovelace

http://www.poemhunter.com/poem/the-scrutiny/