I think it is a threnody-- Johnny's threnody for TK, after he kills her, and to an extent for the parts of himself that he's been leaving with the people who have tried to take them away.
Loved the story. Love gay stories in general. I'm queer myself, I generally find myself unrepresented in my favorite genres-- it's nice to see some gay stories that aren't just Gay Stories of Gayness For The Gays. Johnny went through the same thing most teenagers go through-- that sort of intense limerence-- in an identifiable way. Maybe I liked it more because I've been there, without the, you know, lightning parts, but whatevz.