Books like Riding temptation by Jaci Burton

He’s a biker working undercover for the Feds. She joined the Wild Riders for reasons of her own. Together, they’re burning up the asphalt and tearing headlong into danger and passion… Ever since runaway Jessie Matthews teamed up with the gang of special ops bikers, the guys of the Wild Riders have thought of her as their kid sister. Except for Diaz Delgado. Over the past few years he’s been watching the budding of a ripe young woman. Jessie’s glad somebody finally sees her for who she is—and she’s thrilled it’s Diaz. His dark good looks and killer body have tempted her since day one. Diaz’s unbrotherly urges have been hard to fight but the last thing he’d want to do is hurt Jessie and break up the gang. But when they both go undercover to infiltrate a group of killer survivalists, he knows it’ll be hard to keep his distance—especially when the mission takes a risky turn. Now Diaz has no choice but to open himself up to the one woman who may be strong enough to take him on.

First publish date: 2008