Who is Damen Auguste from Evermore: The Immortals and what is their importance?

Damen Auguste is an immortal who has followed Ever through centuries of lifetimes, always loving her but always losing her to death at the hands of his wife, Drina. Damen is wealthy by virtue of his centuries of life and his psychic abilities. Damen is apparently tied to Drina by a marriage that occurred centuries earlier. However, he has ceased to love her because she has become completely evil, corrupted by the power of being immortal. Damen enrolls himself in school in order to be near Ever. He is immediately the center of attention for most of the students, especially the girls. Damen performs what everyone takes to be sleight-of-hand, producing flowers for Ever and another girl, Stacia, though he always produces tulips for Ever and white roses for Stacia. It takes time for Ever to realize Damen is making a subtle statement through his choice of flowers. Damen is very handsome and says that he's been legally declared an emancipated teen by the courts. He is very smart and knows the answers to anything asked in class, apparently without studying. When he asks Ever to cut class with him one day, he pleads with her not to make him go back to class. The plea makes Ever laugh initially but she later realizes it's because he's so bored. Damen is able to cut through the psychic chatter that keeps Ever constantly on edge, providing a quiet, serene place for her just by his touch. This both frightens and appeals to her.