You can’t make me whole.

That was my first mistake:
Thinking I needed you to become me.
Because I can’t lift myself up,
Unless I’m lifting someone else.
Because I can’t value myself,
Unless I’m valuable to someone else.
You became my hope;
Visions of our future,
Played vividly in my mind.
I made you my foundation,
But it crumbled,
And I fell.
I fell for days.
Falling.
Falling.
Falling,
Until I stopped asking, Why?
The ground finally met me,
But it didn’t hurt –
I was already broken –
And as I lay there,
A new question came to mind:
Who?
Not, Who’s next?
As if I could easily rise,
And walk away from this.

Who am I?