The Love Boat S04 E10 Captain's Triangle/Boomerang/Out of This World

"You Say You Can't Score on Shore? On This Cruise... You Can't Lose!"

The captain's ex-girlfriend comes aboard the ship and constantly makes passes at him because she feels neglected by her husband. A model pretends to be married to keep away annoying suitors. A man is convinced that a fellow passenger is an alien who turns into a plant every night.