Ashes Adrift by Diana Gardin

What do you do when the strongest girl in the world falls apart?

You hold her. And you stroke her hair. And you whisper to her that everything is going to be all right.
Even if you’re not sure it will be.
I’m Drew Garrick, and I was never supposed to fall in love with Gillian Ambrose. It wasn’t part of the plan. Sleep with her? Yes. Have a good time with her while our best friends fell in love? Yes. But fall for her? Never.

The plan changed the moment her brother was released from prison, and all the dangers of his old life reared their ugly heads.
“Protect her,” he said.
And that’s what I promised to do.
Whatever it took.