How?

How can I love you so much
That my heart is breaking
Breaking, breaking;

How can I love you so much
That my chest is shaking
Shaking, shaking;

How can I love you so much
That these tears keep falling
Falling, falling;

How can I love you so much
That my soul is crawling
Crawling, crawling;

How can I love you so much
That I reach darkness
Darkness, darkness;

How can I love you so much
That our nails are tarnished
Tarnished, tarnished?