Naughty But Nice by Jill Shalvis

Lingerie model Cassie Tremaine Montgomery intends to have her revenge on the citizens of her hometown—starting with seducing the sheriff, Sean "Tag" Taggart. Tag, however, isn't cooperating. He's more than willing to set the sheets on fire with her, but he's asking for more than just sizzling sex…. He knows Cassie's not as tough as she pretends. And he knows she cares about him—even if she won't admit it. So he'll just turn up the heat until she concedes there's more between them than this red-hot passion.

Naturally Naughty by Leslie Kelly

Kate Jones, the girl from the wrong side of the tracks, is home. And she's got an agenda. To get revenge on the man who humiliated her mother, Kate's going to seduce that man's son—the town's golden boy, John Winfield Jr.—and then leave him drooling in a puddle of lust. However, when she finds herself seduced by a sexy stranger named Jack, little does she guess that the tables have just been turned….