I think the key to the song is "And your heart so young and so naive
To ever feel for a moment that I might dare to believe". The naive heart of the girl can't understand the depth of belief he has. The relationship can only end in ruin because of this. Cornell knew himself. More men should understand this about themselves and about women. Beauty and naivety aren't charming in the long run, they are deadly to a deeper understanding, to a deeper relationship based on belief.
When the charm fades and life makes itself into a struggle requiring cold hearted will to survive, the flutter girl is useless and broken.
I think the key to the song is "And your heart so young and so naive To ever feel for a moment that I might dare to believe". The naive heart of the girl can't understand the depth of belief he has. The relationship can only end in ruin because of this. Cornell knew himself. More men should understand this about themselves and about women. Beauty and naivety aren't charming in the long run, they are deadly to a deeper understanding, to a deeper relationship based on belief. When the charm fades and life makes itself into a struggle requiring cold hearted will to survive, the flutter girl is useless and broken.