"I'm also a sexual sadist," she says quietly.
You ask what that means.
"I'm not sure what it would mean for you yet," she says, teasing you by playing with her finger in her lips. "That's another reason we should try it out before we get married. I don't want to hurt you too much... but it turns me on to think of the ways I could hurt you, maybe just a little bit at a time, but over a long time... if we were married."
You say you understand. Now you feel a bit scared of what you have gotten yourself into.
But you figure there is no turning back now, so you drop to your knees in front of her...