At the time, Ford was married to Mary Marquardt. He was 33 and she was 19.

"It was so intense," Fisher, 60, told People. "It was Han and Leia during the week, and Carrie and Harrison during the weekend."

Fisher also talks about the romance in her new book, The Princess Diarist.

Ford allegedly received a copy of the book early and was aware the affair would be discussed, according to People. His rep did not immediately respond to a request for comment from Heat Vision.

The onscreen and apparently offscreen lovers spent their first night together following a birthday party for director George Lucas, according to People.

"I looked over at Harrison. A hero's face — a few strands of hair fell over his noble, slightly furrowed brow," Fisher writes in her book, according to the magazine. "How could you ask such a shining specimen of a man to be satisfied with the likes of me?"

She continues, "I was so inexperienced, but I trusted something about him. He was kind."

Ford and Fisher reprised their roles for last year's blockbuster Star Wars: The Force Awakens.

Around 2:30 p.m., Fisher tweeted that reports about the book excerpts were being taken "out of context," but she did not elaborate other than to say she would never discuss someone's prowess in bed.

I couldnt get twitter working on my new phone so Ive been away during this out of context book excerpt time. — Carrie Fisher (@carrieffisher) November 15, 2016

I would never talk about how someone was in any furniture--chair, bed, coffee table or otherwise — Carrie Fisher (@carrieffisher) November 15, 2016

On Wednesday, Fisher addressed the affair once again, tweeting in all emojis — as she does sometimes — "When you are 19 everything is intense."

— Carrie Fisher (@carrieffisher) November 16, 2016

UPDATES:

Nov. 16, 11 a.m.: This story has been updated with a new tweet from Fisher.

Nov. 15, 2:40 p.m.: This story has been updated with tweets from Fisher.