"Aren't you just the gentleman. Unfortunately, the chances of you being offered sex by me are about as great as you becoming elected Minister of Magic. Good luck on your campaign, though."
"Oh, Zacharias," she shook her head slowly. "You're not even insulting my intelligence now, but your own. You know full well that I'm capable of many, many things." It was true. He'd witnessed her throughout the years, he'd seen the things she'd resorted to get ahead and he'd known her general attitude toward such measures besides. There were not many things that Marietta would flat-out refuse to do if it would benefit her in some way. She'd slept with Zacharias, after all. In the end, if she were met with the choice of killing to get ahead, there's a fairly good chance she'd do it.
"Figuring out your weaknesses and exploiting them to my advantages is not going to be quite as difficult as you expect it to be. Oh which reminds me, what are you hoping to gain if you, by some small miracle, win?" she gave him an amused expression, as though the idea was ludicrous to her.