Stepbrother Temptation (Forbidden Love, Book One) (A Billionaire Stepbrother Romance)

Introducing Stepbrother Temptation, book one in the new Forbidden Love series by Rachel Watson:

Sexy, long-legged socialite, Kate Stenson, was headed to the family beach house for a summer of careless fun after her college graduation but soon finds herself in a relationship that she may not be able to escape.

Her billionaire stepbrother, Sean Sharp, set his sights on Kate, the beautiful brunette, the minute she arrived at the house, and she gave into him willingly, knowing from his reputation that it might mean trouble.

The sex, fighting, and games create a storm cloud over the summer, and Kate doesn't know how to get out. Are Kate and Sean using each other and playing a dangerous game, or is there more to their relationship and what they have?