Shakespeare's Sonnets: Canst thou, O cruel, say I love thee not

Canst thou, O cruel, say I love thee notWhen I against my self with thee partake?Do I not think on thee when I forgotAm of my self, all tyrant for thy sake?Who hateth thee that I do call my friend,On whom frown'st thou that I do fawn upon,Nay if thou lour'st on me do I not spendRevenge upon my self with present moan?What merit do I in my self respectThat is so proud thy service to despise,When all my best doth worship thy defect,Commanded by the motion of thine eyes? But love, hate on, for now I know thy mind; Those that can see thou lov'st, and I am blind.