Does anyone have any information on this beautiful song?

I first came across it on the Transatlantic sessions, and while I think I have most of the lyrics down, I'm not so sure about the verse that starts:

I love you with a fever
I love you with a ??past??

If anyone has an "official" version of the lyrics, and/or can direct me to where this song comes from (is it another Darrell Scott original?) I'd be most grateful.

Regards, John.

PS there's a youtube version here taken from the transatlantic sessions: http://www.youtube.com/watch?v=PZg2sHkujP0