"It's complicated," she explained, not really wanting to delve into their whole history. "We work together. And history has shown that I am terrible at relationships. I can't take the risk of losing him when I screw it up. We're also very different in a lot of ways, with very different ideas about relationships."
She frowned further. "A few weeks ago. Here. He crossed that line. He wants to try having a romantic relationship." She paused. "I said no."