Ride Dirty by Laura Kaye

Caine McKannon is all about rules. As the Raven Riders Sergeant-at-Arms, he prizes loyalty to his brothers and protection of his club. As a man, he takes pleasure wherever he can get it but allows no one close—because distance is the only way to ensure people can’t hurt you. And he’s had enough pain for a lifetime. And then he rescues a beautiful woman from an attack. Kids and school are kindergarten teacher Emma Kerry’s whole life, so she’s stunned to realize she has an enemy—and even more surprised to find a protector in the intimidating man who saved her.

Tall, dark, and tattooed, Caine is unlike any man Emma’s ever known, and she’s as uncertain of him as she is attracted. As the danger escalates, Caine is in her house more and more – until one night of passion lands him in her bed. But breaking the rules comes at a price, forcing Caine to fight dirty to earn a chance at love.