Sugar by Anna Martin

Cody Watson has three priorities when he arrives in Miami for the summer: to party with his friends, get laid, and find a job. With only a year left of grad school, he has high hopes for his last few months before the hard work starts.
Then he finds something better than a job… a Sugar Daddy.
Forty-eight and twice divorced, Brian Salvo knows he’s a workaholic. As CEO of a construction company he barely has time for romantic entanglements, but Cody is exactly the type of person he enjoys showering with gifts and affection. Brian’s happy to keep their relationship low-stress and commitment-free, especially when Cody’s sexy and vibrant nature brings out his long-forgotten adventurous side.
As the summer progresses, Cody struggles to reconcile their no-strings-attached agreement with the increasing heat of their relationship. Brian was only supposed to be a summer fling… what the hell is Cody supposed to do when it starts feeling like more?