Under the Waterfall — Neil Plakcy

As soon as they're settled in their new home on the French Riviera, bodyguards Aidan and Liam are sent to the island of Corsica to protect a mining executive and his family. Though they're still in love, and having lots of sex, the disruption-- and the discovery that the client's son is gay and in a touchy relationship -- causes both bodyguards to question their skills and their commitment to each other.

Can they engineer a happy ending for Michel and his boyfriend, while protecting the family from deadly adversaries?