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Some devout fans of television shows and movies call themselves "shippers" when they mentally (or when writing fan fiction) develop an extreme interest in the romantic relationship of two characters. For example, fans of the TV series Lost do this with Kate, Jack and Sawyer. Sometimes shippers will alter the romantic couplings from the original story. (The term "shipper" is believed to have originated with fans of the TV show X-Files who wrote endless fan fiction love stories about Mulder and Scully.)