"Because fucking the wolf, he knows that she could never love or would ever consider fucking one again. The alternative is the wolf in human form, with your physical perfection, who she would be physically attracted to. Even if it were a real human, there lies the rub. I think most people are afraid their spouse can find someone more physically appealing, more sexually arousing, a better lover, and that they'll fall out of love with them, and fall in love with the new person in their life, creating jealousy and fear. Wolves are so casual about sex. Humans aren't. For most of us, sex is wrapped up in our...