A billionaire, age-gap romance....
Caleb

I'm a man without limits, except one: my best friend's daughter, Isabel. She's a tempting little brat, but she's definitely off limits. She's too young and far too innocent, and I'm not the right kind of man for that. My tastes run toward the dark side. When she shows up at my sex club spoiling for a fight, I'm tempted to give her one ... and a punishment she won't soon forget. I'm sure that I can scare her away, but when I tell her to call me daddy, she doesn't run. She obeys.

Isabel

I've had a crush on my dad's best friend for years, but who knew he wasn't just hot? He's also kinky, and he makes me want to do very bad things. He makes me call him daddy, and I want him to take of me, and corrupt me in a hundred different ways. But when I start to want more than sex, Caleb is clear: he'll take care of me, give me boundaries, make me his little girl, but he'll never fall in love.

Unless I can change him.

Warning: this book contains explicit scenes and language