Ground Zero by April Canavan

Ground Zero: The center or origin of rapid, intense, or violent activity

I carried her lifeless body out of a burning building.
One that collapsed on top of us, forcing us to fight for survival.
Where she gave her life so that I could live.
That nightmare wasn’t the happy ending I thought I’d find in the flames.
Turns out, it wasn’t our ending at all.
It was the beginning of our story.
The one where I fell in love without ever knowing her name…
Or the destruction she would thrust into my path.