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"Remember, your goal is to resist your orgasm as long as you're able. No matter what I do to you, resist cumming as long as possible. Strain to your utmost. I want you to beg me to cum, so I know how close you are, but I won't let you and you must keep resisting until you absolutely cannot hold it anymore. Do you understand, Mistress?"
"Yes, of course."
So I began a new seduction