Shipwreck blow-and-rescue

My girlfriend has this fantasy about being shipwrecked. She is on a deserted island after being lost during a storm. She is found by a man from a Caribbean island. The man finds her after she was lost for 1 year. He arrives also during a storm and takes shelter in her makeshift hut. He gets wet during the storm and has to remove his shorts to dry out. When he re-enters the hut, he is naked. She sees his penis and gets aroused. He asks her if she wants to touch it and she does. He then moves closer and she begins to perform oral sex on him. After the storm passes, he takes her to another island where there are people and she is saved.