Marcus laughed a little, "I guess you're right", he said before taking another sip of his drink. At her sudden curiosity he raised an eyebrow, "Go ahead", he said shrugging to her. When she asked her question he laughed a little, "Yes, I believe there is", he said scratching his nose. "You see, demons, at least a large number of them, are creatures that hold a massive amount of lust in their bodies. This normally makes species like succubi invaluable but it also makes other species, such as nymphs, an immensely rare and happy find. As to why we value them, well. The phrase "nymphomaniac" has it's appropriate name from history", he said finishing off his drink and setting the bottle aside, "Why do you ask, love? Past experience with one of my kind?".