Cease, fond shepherd -- cease desiring
What you never must enjoy;
She derides your vain aspiring,
She to all your sex is coy.
Cunning Damon once pursu'd her,
Yet she never would incline;
Strephon too as vainly woo'd her,
Though his flocks are more than thine.
At Diana's shrine aloud,
By the zone around her waist,
Thrice she bow'd, and thrice she vow'd
Like the Goddess to be chaste.

Lady Mary Wortley Montagu

http://www.poemhunter.com/poem/advice-2/