The Sky Is a Poisonous Garden Lyrics

Lyric discussion by Red October 

Cover art for The Sky Is a Poisonous Garden lyrics by Concrete Blonde

I would think this is about a relationship which will be judged harshly -"They knew what they had would be young naked prey..." I'm pretty sure that the bit about dying at the end is the euphemistic sense -that is, to have an orgasm (Shakespeare used that one a lot and the French still call it "The little death", not someone actually dying, or the whole next morning wouldn't matter much, would it?