Miles by Ana Night

They were enemies long before the kiss that changed everything.

Miles has spent his life keeping people at arm’s length, and there’s one person he avoids at all costs—Kaz Tailler, his relentless childhood bully and the son of the president of the King’s Disciples Motorcycle Club. For years, Kaz has pushed him toward violence despite the cost being a broken nose.
They’re adults now, and Kaz is a full-patch member of the Disciples. Miles is convinced they’ll be able to keep their hands to themselves, but one night at the Disciples’ clubhouse proves him wrong. A reckless kiss shatters the thin line between hatred and desire he’s been riding for years.
Kaz may be used to getting under his skin, but now he’s worming his way into his heart, and Miles isn’t sure which is more terrifying—falling for his former tormentor or discovering that the feeling is mutual. Trust doesn’t come easy for Miles, and if he lets Kaz in, he might end up with a heart broken beyond repair.

A steamy, angst-heavy M/M romance standalone with bully-to-lover tension, forced proximity, and one hell of a possessive biker who doesn’t take no for an answer.