The Gift Songtext

Please explain a couple things to me
How you could leave and then turn your back on me
If only we said goodbye, maybe then I would respect my life
In the end I'm so ashamed of what you did

(Why) You said that you would never leave, I didn't even see you go
(Why) You just up and turned your back on me, for reasons I will never know
(Why) Now I'm staring at an empty space, it's the place that you used to be
(Why) And the look you see upon my face, is the gift from you to me