Fireworks lyrics

So this is the end, of you and me
We had a good run, and I'm setting you free
To do as you want, to do as you please
Without me
Remember when, you were my boat
And I was your sea
Together we'd float, so delicately
But that was back when we could talk about anything

Cause I don't know
Who I am when you're running circles in my head
And I don't know, just who you are
When you're sleeping in someone else's bed

Three whole words and eight letters late
And that would've worked on me yesterday
We're not the same I wish that could change
But it can't
And I say your name and in the same breath
I say something that I'll grow to regret
So keep your hands on your chest,
And sing with me that we don't wanna believe

Cause I don't know
Who I am when you're running circles in my head
And I don't know, just who you are
When you're sleeping in someone else's bed

So it's true what they say, if you love someone you should set them free
Oh it's true what they say, you went and threw it away

I don't know who you are
And I don't know who you are
And oh, cause I don't know who you are
When you sleep with somebody else
Cause I don't know who I am, when you're sleeping with him
And it's true what they say, went and threw it away