"Perhaps you've played this game. Your boyfriend/girlfriend/spouse lets you have one free pass -- one special man or woman who is so attractive and out of reach that if circumstances allowed it, your partner would allow you to sleep with that person. Most monogamous couples feel safe with the free pass rule as it's more theoretical than practical. Still, if your partner gave you a free pass, would you use it? On who? "
This prompt is so outside of anything I've ever thought of that I have no answer for it. And wouldn't even want to consider the idea.