Fantasies are one thing, and reality another. No form of acting out such a fantasy would benefit anyone, and it would be highly likely to end up as hurtful and to severely damage your relationship. Good advice all round, and Poppie's ideas might be worth trying. If you had a fantasy involving high physical danger to him, or something like you leading him, naked, through the supermarket with a rope round his neck, would he be so eager to act it out for you, and accept the ridicule that would abound on him ? Consider marriage counselling to work on what leads him, not to the fantasies, but to want to act out something so inevitably destructive to your marriage