Bronx by Margo Bond Collins

Bronx Bishop has spent his entire life as a Guardian of the Moonstone Pack, always protecting everyone around him, often at his own expense. He’s a battle-scarred warrior—not the kind of man a young, beautiful woman would ever choose on her own. So when his alpha Steele tells Bronx that a mate has been chosen for him from among the females of the Idaho pack, he doesn’t dare allow himself to believe she could ever fall in love with him.
When Cora Harris’s new alpha tells her he’s arranged for her to become Bronx Bishop’s mate, she’s terrified. She might have to marry Bronx, but she knows he could never love her—or the child of the alpha the Moonstone Pack took down.
But the more Cora gets to know Bronx, the more she realizes that he’s precisely the kind of mate she’s always wished for. So when she learns that members of her former pack are planning to betray the treaty, she must decide: which side will she betray—her old pack with everyone and everything she’s ever loved, or the Moonstone Pack with the man she thinks she might be able to love from now on?