(CNN) "Star Wars" fans may have pored over the details of Carrie Fisher's affair with Harrison Ford in her last book, but he didn't.

Turns out Ford hasn't read it.

Fisher, who died in December shortly after the book's release, revealed in it that she carried on a relationship with Harrison on the set of the now iconic 1977 film.

Fisher signs copies of her book, "The Princess Diarist," in Los Angeles on November 28, 2016.

Fisher signs copies of her book, "The Princess Diarist," in Los Angeles on November 28, 2016.

Tom Hiddleston looks on as Fisher and her dog, Gary, arrive for the 102nd White House Correspondents' Association dinner in Washington on April 30, 2016.

Tom Hiddleston looks on as Fisher and her dog, Gary, arrive for the 102nd White House Correspondents' Association dinner in Washington on April 30, 2016.

Domhnall Gleeson, left, Hugo Sigman, Fisher, and Damian Szifron pose for a photo at the EE British Academy Film Awards in London on February 14, 2016. Their film, "Wild Tales," won the BAFTA Award for best film not in the English language.

Domhnall Gleeson, left, Hugo Sigman, Fisher, and Damian Szifron pose for a photo at the EE British Academy Film Awards in London on February 14, 2016. Their film, "Wild Tales," won the BAFTA Award for best film not in the English language.

Fisher salutes as she poses with a storm trooper at the European premiere of "Star Wars: The Force Awakens" in central London on December 16, 2015.

Fisher salutes as she poses with a storm trooper at the European premiere of "Star Wars: The Force Awakens" in central London on December 16, 2015.

Fisher takes part in a "Star Wars" celebration event on April 16, 2015, in Anaheim, California.

Fisher takes part in a "Star Wars" celebration event on April 16, 2015, in Anaheim, California.

Fisher poses with her mother Debbie Reynolds and daughter Billie Catherine Lourd at the 21st Annual Screen Actors Guild Awards in Los Angeles on January 25, 2015.

Fisher poses with her mother Debbie Reynolds and daughter Billie Catherine Lourd at the 21st Annual Screen Actors Guild Awards in Los Angeles on January 25, 2015.

Fisher takes part in a dress rehearsal for her play "Wishful Drinking" at the Geffen Playhouse in Los Angeles in 2006.

Fisher takes part in a dress rehearsal for her play "Wishful Drinking" at the Geffen Playhouse in Los Angeles in 2006.

"Star Wars" trio Mark Hamill, left, Fisher and Harrison Ford speak during a tribute to filmmaker George Lucas at the 33rd American Film Institute Life Achievement Award event in Hollywood on June 9, 2005.

"Star Wars" trio Mark Hamill, left, Fisher and Harrison Ford speak during a tribute to filmmaker George Lucas at the 33rd American Film Institute Life Achievement Award event in Hollywood on June 9, 2005.

Fisher attends a book signing for her novel, "The Best Awful," in Beverly Hills, California, in 2004. The semi-autobiographical novel fictionalized events from Fisher's life.

Fisher attends a book signing for her novel, "The Best Awful," in Beverly Hills, California, in 2004. The semi-autobiographical novel fictionalized events from Fisher's life.

Meryl Streep, left -- who portrayed a character based on Fisher in the film adaptation of Fisher's 1987 novel, "Postcards from the Edge" -- is seen at the film's premiere in Century City, California, on September 10, 1990.

Meryl Streep, left -- who portrayed a character based on Fisher in the film adaptation of Fisher's 1987 novel, "Postcards from the Edge" -- is seen at the film's premiere in Century City, California, on September 10, 1990.

Musician Paul Simon poses for a picture with Fisher in 1983. The two were married in August and divorced about one year later in July 1984.

Musician Paul Simon poses for a picture with Fisher in 1983. The two were married in August and divorced about one year later in July 1984.

Fisher stars in the film, "Star Wars: Episode VI -- Return of the Jedi" in 1983. The 'gold bikini' is one of her most famous costumes as Princess Leia. In addition to her acting career, Fisher -- who was diagnosed with bipolar disorder at age 24 -- has lobbied as an advocate for mental health awareness and treatment and has spoken before the California state Senate.

Fisher smiles for a photograph in 1980. Fisher is a well-respected script doctor of such movies as "The Wedding Singer" and "Sister Act."

Harrison Ford and Fisher embrace during filming of "Star Wars: Episode V - The Empire Strikes Back" in 1980. On November 16, 2016, Fisher revealed to People magazine that she and co-star Ford had an affair during the 1976 filming of "Star Wars."

Fisher on the set of "Star Wars: Episode V -- The Empire Strikes Back" in 1980.

Fisher on the set of "Star Wars: Episode V -- The Empire Strikes Back" in 1980.

Fisher with fellow actresses Amy Irving, left, and Teri Garr in 1978.

Fisher with fellow actresses Amy Irving, left, and Teri Garr in 1978.

Mark Hamill (Luke Skywalker), Fisher and Harrison Ford (Han Solo) on the set of "Star Wars: Episode IV -- A New Hope" in 1977.

Mark Hamill (Luke Skywalker), Fisher and Harrison Ford (Han Solo) on the set of "Star Wars: Episode IV -- A New Hope" in 1977.

Warren Beatty and Fisher, then 17, take a break during filming of the movie "Shampoo" in 1974. Fisher has acted in films, plays and television shows, and has written a number of best-selling books.

Warren Beatty and Fisher, then 17, take a break during filming of the movie "Shampoo" in 1974. Fisher has acted in films, plays and television shows, and has written a number of best-selling books.

Debbie Reynolds makes her first appearance on Broadway in a remake of the 1919 musical "Irene" in 1973. Fisher, seated on the floor, dropped out of high school at age 15 and was featured in the musical as part of the chorus.

Debbie Reynolds makes her first appearance on Broadway in a remake of the 1919 musical "Irene" in 1973. Fisher, seated on the floor, dropped out of high school at age 15 and was featured in the musical as part of the chorus.

Fisher is photographed with her parents and brother, Todd, who was born in 1958.

Fisher is photographed with her parents and brother, Todd, who was born in 1958.

Fisher was born in Beverly Hills on October 21, 1956, to Eddie Fisher and Debbie Reynolds. Here, they gaze proudly at their newborn daughter on January 2, 1957.

Fisher was born in Beverly Hills on October 21, 1956, to Eddie Fisher and Debbie Reynolds. Here, they gaze proudly at their newborn daughter on January 2, 1957.

Carrie Fisher is seen as Princess Leia on the set of George Lucas' "Star Wars: Episode IV -- A New Hope" in 1977. The American actress and writer is best-known for her portrayal of Princess Leia in the "Star Wars" movie franchise. Fisher was hospitalized December 23 in Los Angeles after suffering a heart attack. Fisher died on Tuesday, December 27. She was 60.

Carrie Fisher is seen as Princess Leia on the set of George Lucas' "Star Wars: Episode IV -- A New Hope" in 1977. The American actress and writer is best-known for her portrayal of Princess Leia in the "Star Wars" movie franchise. Fisher was hospitalized December 23 in Los Angeles after suffering a heart attack. Fisher died on Tuesday, December 27. She was 60.

Fisher was 19 when she landed the breakthrough role of Princess Leia. At the time, Ford, then 33, was married to Mary Marquardt, with whom he had two children.

Asked by GQ how he felt when Fisher's book came out, Ford said, "It was strange. For me."

As to whether he had any advance warning about Fisher's revelations, Ford was more circumspect.

"Um, to a degree," he said. "Yes."

The actor didn't want to get into specifics, he said.

"You know, with Carrie's untimely passing, I don't really feel that it's a subject that I want to discuss," Ford told the publication.

Before her death, Fisher talked to People magazine about her relationship with Ford.

"It was so intense," she said. "It was Han and Leia during the week, and Carrie and Harrison during the weekend."