Another Earth
Alexander placed Denia's corpse very carefully on the left side sofa in the main cabin. He kissed the forehead of the corpse of the girl he loved, then came out again from the main cabin to untie the yacht to the dock.
After that, he unloaded two of the yacht's four engines. And then, he entered the wheelhouse, started the yacht's engine, then took the yacht sailing, out of the cove, and further away from Bubuan Island.
Alexander didn't care that the yacht had very little fuel. Nor did he care that he sailed without food and drink.
All he wanted was to be alone with Denia, even though Denia was now just a lifeless body.
He steered his yacht into the middle of the sea, then left the wheelhouse just like that, letting the yacht sail without a captain, while he headed to the main cabin.
In the main cabin, Alexander sat near Denia's corpse, hugged the corpse, and carried it on his lap.