This song was commissioned by the studios that created the James Bond movie. By this we mean that the lyrics are dedicated to the film. It's not what she feels.
However:

"I should've known
I'd leave alone
Just goes to show
That the blood you bleed
Is just the blood you owe"

It means she was cheated on by a former lover or something like that.

"We were a pair
But I saw you there"

She had a boyfriend, whom she probably saw in the wrong place, which made her change her mind about him.

"You were my life
But life is far away from fair"

Her boyfriend was something very important to her, like life. But ... life is far from fair.

"Was I stupid to love you?
Was I reckless to help?
Was it obvious to everybody else"

Now she regrets that he loved her.

"That I'd fallen for a lie?
You were never on my side
Fool me once, fool me twice"

She realizes she's been lied to. That her boyfriend was never on her side. That she fooled her twice ...

"Are you death or paradise?"
She wonders if he has died or is he in paradise.

"Now you'll never see me cry"
Now she has learned her lesson and is no longer sensitive. Now it has become quite powerful.

"There's just no time to die"
There is not enough time to die. It starts from the beginning.

"I let it burn
You're no longer my concern
Faces from my past return
Another lesson yet to learn"

She forgets all the memories. He is no longer in her care. She didn't care about him anymore. Because she learned another lesson ...

"That I'd fallen for a lie
You were never on my side
Fool me once, fool me twice
Are you death or paradise?
Now you'll never see me cry
There's just no time to die
No time to die
No time to die
Fool me once, fool me twice
Are you death or paradise?
Now you'll never see me cry
There's just no time to die"

She repeats that she doesn't care anymore.

Offered by: The International Black Pixel.