Sonnets by William Shakespeare: XLII
That thou hast her it is not all my grief, And yet it may be said I loved her dearly; That she hath thee is of my wailing chief, A loss in love that touches me more nearly. Loving offenders thus I will excuse ye: Thou dost love her, because thou know'st I love her; And for my sake even so doth she abuse me, Suffering my friend for my sake to approve her. If I lose thee, my loss is my love's gain, And losing her, my friend hath found that loss; Both find each other, and I lose both twain, And both for my sake lay on me this cross: But here's the joy; my friend and I are one; Sweet flattery! then she loves but me alone.