By Ned Ehrbar

(CBS NEWS) – Carrie Fisher didn’t anticipate how much attention she’d attract for her revelation that she’d had an affair with Harrison Ford during the production of “Star Wars.”

READ MORE: UPDATE: Early Morning Looting Caravan Targets Stores In Emeryville, Oakland; One Suspect Arrested


Fisher, who said she found the reactions “surprising,” mostly feels bad for Ford himself.

“He’s incredibly private,” she said during an interview on the “Today” show Monday. “I feel really bad doing that to him.” Fisher explained that she had given Ford a heads-up about the new memoir, “The Princess Diarist,” before its publication.

READ MORE: Father, 4-Year-Old Son Struck While Crossing Street In Novato; Driver Accused Of Felony DUI

Fisher admitted that she was relieved when the three-month affair ended, as Ford was married at the time with two children.

“I wasn’t raised that way,” she said. “But when you’re on location — this is something I discovered — everything is permitted. I didn’t know that. I haven’t been on location since.” Fisher’s latest book consists of diary entries written during her “Star Wars” days — starting when she was 19 years old.

“It’s very raw,” she explained, adding that she was “so insecure” when she wrote them. “Obviously I didn’t expect anyone, including myself, to read it.”

MORE NEWS: Inmate Freed After 15 Years in Prison Thanks To Updated Research On Shaken Baby Syndrome
© 2016 CBS Interactive Inc. All Rights Reserved.