Sing with Me by Jan Thompson

A father of two, widowed billionaire Diehl Brooks falls in love with his personal chef, but complications from his unfulfilled first marriage threatens his chance for love a second time around.

A selfless personal chef…
Skye Langston is a personal chef for residents and vacationers in the St. Simon’s Island area. When she finds out that her friend Brinley’s vacant beach house will be occupied for the summer, Skye is elated because she helped design the chef’s kitchen in that oceanfront house several years ago, and would love to cook in it again.
However, when Skye realizes who she will be cooking for, she is hesitant. She has heard a lot about Diehl, the once bad boy on the island, but they moved in different social circles. Now their worlds intersect in his beach retreat. Single again, the billionaire is available, but Skye resists wanting him.
Seeing him almost every day changes something about her view of him, but Skye tells herself she is only being kind to the widower, as the Bible asks Christians to be kind to one another.

A single-again billionaire…
A prodigal son who has wandered away from God, businessman Diehl doesn’t know how to come home. After being tragically widowed, he works himself aground at his father’s company, believing that a packed schedule would bury his grief. He leaves his two school-aged children with a nanny, and eventually agrees to let them stay with his in-laws. His own parents are in a tug-of-war to spend time with their grandchildren.
Diehl burns out at work, and is forced to take a summer sabbatical before they let him ruin the multi-billion-dollar family business. Reluctantly, he moves into his sister’s beach house on St. Simon’s Island to unwind and find himself. It has room for his two kids to stay with him, and it’s close enough to his parents’ home on Seaside Island for them to spend time with their grandparents.

In the beach retreat, his casual friendship with his sister’s personal chef quickly turns into something romantic, but his past shows up to collect yet another pound of flesh.