Hi-School Romance #1

Sally, a lighthouse keeper's daughter, feels desolate and isolated on her island home until she meets Roy, a charming young man who sweeps her off her feet. When the lighthouse suddenly goes dark and Sally discovers Roy has disappeared, she learns he was using her to access the lighthouse for his own purposes. In a climactic badminton game with another boy named Ted, Sally realizes her true feelings and ends up with Ted after a campfire outing where Ted comforts her through her heartbreak over Roy's betrayal.