Intelligence Check by Katherine McIntyre

Mason gives people too many chances, Hunter gives too few, but are they willing to take a chance on each other?
Mason’s always tried to believe the best in people, and for the most part, their sunshine attitude pays off. They love their friends, their family, and they’re determined to win over their broody, gorgeous coworker Hunter—especially when their car in the shop turns into carpooling to work together.
Hunter’s only seen the worst in people, and he doesn’t trust easily—not after growing up with a mom who ditched and an addict dad. However, perky, sweet, hot-as-hell Mason seems to win him over with every goofy comment or adorable smile, and before he can stop himself, he’s falling hard.
The more time Mase and Hunter spend together, the more their attraction flares until they’re both holding the hope for something real. However, when Hunter’s past collides with his present, the secret he’s been keeping threatens to destroy everything—the home he established, the friends who’ve become his new family, and any chance of a future with Mason.