The Very Nice Box by Laura Blackett and Eve Gleichman 

Ava Simon designs storage boxes for STÄDA, a slick Brooklyn-based furniture company. She’s hard-working, obsessive, and heartbroken from a tragedy that killed her girlfriend and upended her life. It’s been years since she’s let anyone in.

But when Ava’s new boss—the young and magnetic Mat Putnam—offers Ava a ride home one afternoon, an unlikely relationship blossoms. Ava remembers how rewarding it can be to open up—and, despite her instincts, she becomes enamoured. But Mat isn’t who he claims to be, and the romance takes a sharp turn.