Shakespeare's Sonnets: Why did'st thou promise such a beaut'ous day

Why did'st thou promise such a beaut'ous dayAnd make me travail forth without my cloak,To let base clouds o'er-take me in my way,Hiding thy brav'ry in their rotten smoke?'Tis not enough that through the cloud thou break,To dry the rain on my storm-beaten face,For no man well of such a salve can speak,That heals the wound, and cures not the disgrace:Nor can thy shame give physic to my grief,Though thou repent, yet I have still the loss.Th' offender's sorrow lends but weak reliefTo him that bears the strong offence's cross. Ah but those tears are pearl which thy love sheds, And they are rich, and ransom all ill deeds.