A Playboy is someone with power, too much time on his hands, and too little sense of a goal worth achieving. And if the Playboy happens to belong to a highly advanced culture....
Allan Stern and his secretary Beatrice Kendricks after they awake in New York City, one thousand years after an asteroid destroys most life on earth. In the third book, Allan marries Beatrice (they finally have sex after two years) and with the people of the Abyss set off to build a new civilization on the surface. Yes they run into a few problems along the way (mostly a tribe of semi-human flesh eaters), but Allan is always able to work things out, with Beatrice by his side.
Venus was the most miserable planet in the system, peopled by miserable excuses for human beings. And somewhere among this conglomeration of boiling protoplasm there was a being unlike the others, a being who walked and talked like the others but who was different--and afraid the difference would be discovered. You'll remember this short story.