Curled up inside my bed

I sit up at night curled up in my bed
you're all I can think of and you wont leave my head.
thinking of you comes with every tear
but those thoughts, at my heart they tear.
I just don't understand why you had let me go
all the images of that day begin to slow.
all I can do when I think of you is cry
because without you, every part of me has died.