When Y/n Stark vanished from the face of the earth at the age of fifteen, Tony was desperate on finding out who kidnapped her. Little did he know it was her choice to leave. After a few years he stopped searching for her believing she was dead. Soon after that he started seeing Peter as his son. But what happens, when he finds out Peter tells him practically nothing of his life? (None of these characters except y/n Stark are mine, neither is the cover of the story)