She's A Woman (And Now He Is A Man) Lyrics

Lyric discussion by ratanx 

Cover art for She's A Woman (And Now He Is A Man) lyrics by Hüsker Dü

This song always kind of confused me. Why is he now only a man? Is the "something her heart cannot forgive" homosexuality? Or is Grant's personal life clouding my judgment? Or is the line "Oh brother! Oh brother! I'm telling your sister. No way can I resist her" suggest he slept with her sister? That would also go well with the previous quoted line.