William Shakespeare - Sonnets x

THEN hate me when thou wilt; if ever, now;
Now, while the world is bent my deeds to cross,
Join with the spite of fortune, make me bow,
And do not drop in for an after loss:
Ah! do not, when my heart hath 'scaped this sorrow,
Come in the rearward of a conquer'd woe;
Give not a windy night a rainy morrow,
To linger out a purposed overthrow.
If thou wilt leave me, do not leave me last,
When other petty griefs have done their spite,
But in the onset come: so shall I taste
At first the very worst of fortune's might;
   And other strains of woe, which now seem woe,
   Compared with loss of thee will not seem so!

William Shakespeare

http://www.poemhunter.com/poem/sonnets-x/