As Good as His Word (Harlequin Superromance)

Ronni might be back in his life, but Hayden's going to watch her like a hawk! He thought he'd seen the last of her when she broke his brother's heart years ago. Ronni's betrayal hurt that much more because she was the only woman Hayden could've seen himself settling down with…except his brother wooed her first.

So now she's in trouble and needs his help? Well, that's payback for you. But then, there's the promise Hayden made to his dying brother—to take care of the struggling mother and her kid. Guess a guy's got to do what a guy's got to do. Even if a guy likes doing it a little too much for his own good.