Ghost is an Emily Saliers song, written in 1991.  The version I'm  
transcribing is from the Newport Folk Fest of 10 August '91.

Ghost

There's a letter on the desk top I dug out of a drawer
The last truce we ever came to in our adolescent war
And I start to feel the fever from the warm air through the screen
You come regular like seasons, freely through my dreams

And the Mississippi's mighty, but it starts in Minnesota
At a place that you could walk across with five steps down
And I guess that's how you started, like a pinprick to my heart
At this point you rush right through me and I start to drown

And there's not enough room in this world for my pain
Signals cross and love gets lost and time passed makes it plain
Of all my demon spirits I need you the most
I'm in love with your ghost - I'm in love with your ghost

Dark and dangerous like a secret that gets whispered in a hush
When I wake the things I dreamt about you last night make me blush
You kiss me like a lover; then you sting me like a viper
I go follow to the river; play your memory like a piper

And I feel it like a sickness how this love is killing me
I walk into the fingers of your fire willingly
We dance the edge of sanity;  I've never been this close
I'm in love with your ghost

Unknowing captor, you never know how much you pierce my spirit
But I can't touch you - can you hear it - the cry to be free?
I'm forever under lock and key
For you pass through me

When I see your face before me I would launch a thousand ships
To bring your heart back to my island as the sand beneath me slips
As I burn up in your presence and I know now how it feels
To be weakened like Achilles with you always at my heels

This bitter pill I swallow is the silence that I keep
It poisons me; I can't swim free; the river is too deep
I'm baptized by your (...?...) worse than most
I'm in love with your ghost.