When a woman intends to have a one-night stand, she lets you know it. No illusions from her. But that doesn't feel like honesty to a man, it feels like brutality. Because, let's face it, men are the romantics. We're the ones who need the romance.
Women are romantic.
Women want flowers and candy and all that stuff. Women want the respect and admiration of a man, and they know flowers are a sign of respect from a man. They don't have any of those romantic feelings men think they do. Men have the romantic feelings. Women're much colder and more practical.