Lyric discussion by Sourpalm 

Cover art for Swinging London lyrics by Magnetic Fields, The

I think it's a "quick fall in love" song between two individuals with a two very different world views. You don't have to be perfect to be loveable! But in the long run it won't work. "baby, come back. I'll change, as long we still make the world go nova, and not the sun go black". She saw the sun exploding.