Hurt Yourself for Me Just Your Hand

You failed your girlfriend last time, but she's giving you another chance! Just using you hand for her cruel task: slapping, punching, hitting, and squeezing your cock and balls. Don't you love her enough to just do this for her without whining? She manipulates and teases you with the rewards of your effort, all before snatching them away. She's cruel, but don't you trust her? Do it. For her. But it'll never be good enough. You hitting and slapping your cock, as you bend over in pain, only makes her laugh and chastise you for whining. Can't you do this? You must not love her enough. You must not be enough. You're a disappointment.