Lyrics of I must have left my heart

Tonight was black and blue
This overcoat won't do
It's falling all apart
When i left you
I must have left my heart

The walls are tumbling
My feet are stumbling
I'm all alone in the dark
When i left you
I must have left my heart

Must i always be lonely?
With my dreams at your doorway
Just one more empty dog day
Afternoon

Shall i run to your door?
And stay forever more
I don't know where to start
When i left you
I must have left my heart