Perfect Bastard by Terri E. Laine

Nate Bowmen needs to save his MLB career by keeping his reputation squeaky clean during the offseason. Meeting a stunning woman who drives him crazy in both good and bad ways is a temptation that can screw that up. Avery’s sharp tongue could end his chances of renewing his contract if she wants to make a name for herself. Only something won’t let him walk away.
Avery’s family has a score to settle with the Bowmen’s. When gorgeous Nate arrives back in town, she sees a way to right a wrong while giving her career a boost. When he turns out to be far more than the headlines suggest, she’s tempted in ways she never expected. Her loyalty should be with her family. Falling in love with the bastard isn’t a part of the plan.