This text comes from The Canadian Soldiers' Song Book, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
Fancy you fancying me!
I can't tell what you can see,
For it seems like dreams, not reality,
That you should like my personality,
I can't quite figure it out,
I can't tell why it should be.
I can fancy anybody fancying you,
But fancy you fancying me!