"Yeah," Marek said, grinning back at him, amused. "And I'm not a mind reader - but I don't think she'd like what you're thinking about right now."
He'd never actually had to say no to anyone before. Not that he'd said that word specifically, but that was the sentiment he was going for. He didn't honestly know what he'd do if Duke didn't listen to him and went for it anyway.
Well, Marek knew he wouldn't respond, because he was not a cheater. But he didn't really know what else might be called for in this situation. Was he meant to resort to physical threats? That'd be a shame, he liked Duke, and flirting hardly seemed like a punishable offense.