Why some men cannot love, why we still love them, and what we can do about it. What do you do if you are in love with an emotional vampire? Can he actually control his behaviour? Why does he behave the way he does? Since the ancient Greeks told the story of Narcissus, we have recognised that some people are simply self-obsessed. But there is now evidence to suggest that narcissism is shaping our times, and most of all, our relationships.