Who is Guy from Willow and what is their importance?

Guy is the seventeen-year-old high school senior who befriends Willow when she enrolls in his high school after her parents' death. Like many of the other characters in the novel, Guy is given relatively little physical description, but the reader does learn that Guy is on crew team and has wonderfully muscled shoulders. In the novel, Guy has always been interested in Willow's beauty, but his interest in her changes when he is the first person to discover Willow's self-mutilation. When he first sees Willow's scars, Guy is horrified and threatens to tell Willow's brother the truth. When he realizes how much the truth would hurt David, he decides to make Willow his "project," helping her cope with her emotions in a healthier way than cutting into herself with the razorblade. Throughout his journey with Willow, Guy becomes closer to Willow than he anticipated, and falls deeply in love with her, perhaps because he sees all of Willow, even her flaws. Although Guy sees the most private parts of Willow's body, her scars, he takes his time before their relationship evolves into something sexual. Every romantic moment in Willow and Guy's relationship is preceded by an emotional moment or breakthrough for Willow, which has led some critics to say that the sexual relationship advances as Willow becomes more vulnerable. While this may be true, it is clear that Guy genuinely cares about Willow and that he allows her to take the sexual side of their relationship at her own pace. At the end of the novel, Guy appears to have "saved" Willow from her self-destructive behavior.