At the yacht you could use some love hex.
Gather a token of sweetness from the yearning lover, a handwritten signature from the lover pursued, and a cored apple in which to combine them. Halve the apple and serve to both parties.
You need:
Combine the ingredients in the inventory. Half the apple . The love hex is ready to be served.
Unlike normal walkthroughs, in Nice Game Hints you can select just the puzzle you want hints for. Here are listed the puzzles for "Apple of my eye" in Voodoo Detective. The guide you choose only contains information about that puzzle, reducing possible spoilers for other puzzles.