Lyric discussion by Wintermut3 

I can't help shake the feeling of childhood friendship ruined by romance and/or sexual experimentation.

It's pretty explicit that they've grown apart but "brothers and lovers she and I were," and "like sisters blanket girls," seem to imply that they were more than just close friends at some point, maybe this lead to them drifting apart. "but you never thought it was enough of" seems to be a half finished thought, letting trail off what the other party didn't think there was enough of.

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