I Don't Know Why I Love You (But I Do)

I don't know why I love you but I do 
I don't know why I cry so but I do 
I only know I'm lonely and that I want you only 
I don't know why I love you but I do 

I can't sleep nights because I feel so restless 
I don't know what to do, I feel so helpless 
And since you've been away, I cry both night and day 
I don't know why I love you but I do 

My days have been so lonely 
My nights have been so blue 
I don't know how I manage, but I do 

Each night I sit alone and tell myself 
That I will fall in love with someone else 
I guess I'm wastin' time but I've got to clear my mind 
I don't know why I love you but I do