lonely gift

On my birthday, you got too drunk I let you hurt me 'til you threw up And you told me if you could see yourself through my eyes You would hate him When you're in your head, are you all alone in it? When you're in my bed, I can hear your heart for what it is It's such a lonely gift You said, "You don't want it, I promise" And you woke up, cleaned the carpet You were there once, you've been gone since And I woke up holding nothing You were mine once, or were you gone?