Since You Happened by Holly Hall

Previously published as Forever Grace by Holly Hall.

In the aftermath of a tragedy, twenty-six-year-old Blake Kendall has all but given up on relationships. It seems that nobody truly gets her, until she meets the enigmatic owner of a charitable bookstore called Forever Grace.
Landon Farrar is cold, abrasive, and relentlessly intriguing, and Blake pushes to learn more about the stranger whose scars seem to run deeper than her own. She never imagined that the ghosts of their pasts may not be all that different.
When Landon’s guard falters and Blake discovers the tragic connection between them, she’s faced with a decision: reveal their shared history and risk everything, or keep quiet and salvage the semi-relationship they’ve found? Turns out, you can’t control fate, the past doesn’t always stay in the past, and the things that connect two people can also tear them apart.