We are over

Just one last time,
Then this must end,
You can't be my companion,
You can't be my friend,
You're hold on me is unreal,
When I don't have you angry is how I feel,
We've spent so many nights together,
But I don't want this to continue forever,
Why can't I cope alone?
Why is it I'm so prone? 
So prone to missing you,
Doesn't matter what I take or do,
I always think I'll pack it in,
Take you show you the bin,
But instead of showing you the door,
I light you up and have one more,
So lady nicotine leave me be, 
As I don't belong to you and don't want you to belong to me