Just Like Breathing by Diana Gardin

Her broken pieces are the only thing holding him together…
Arden
One moment, one twist of fate’s cruel hand–and I lost everything. My soul broke into a million pieces I didn’t know how to put back together… until him.
He dragged me through hell and brought me back. But when he saw the person behind the destruction, he hesitated.

Flash
It didn’t take more than a few seconds for the life I knew to crash and burn. With no anchor, I reached out. I didn’t expect to grab onto someone more broken than me… But when she exhaled the first breath of air into my lungs, I knew damn well I wasn’t good enough for her.
The only question was how long could I hold on?