Leaving so soon?

You look down on me
Don’t you look down on me now
You don’t know me at all
A slap in the face
In the face for you now
Just might do now

You’re leaving so soon
Never had a chance to bloom
But you were so quick
To change your tune
Don’t look back
If I’m a weight around your neck
Cause if you don’t need me
I don’t need you