Heidi Montag says Lauren Conrad's absence from MTV's "The Hills: New Beginnings" revival of "The Hills" made for a more "freeing" experience.

The 32-year-old television personality explained during Monday's episode of "Good Morning America" why she was happy Conrad didn't return for "The Hills: New Beginnings."

"I actually was kind of excited Lauren wasn't on it because I felt like it was more freeing and fair, like, for me," Montag said.

Montag's co-star Audrina Patridge agreed about Conrad.

"Without Lauren, like, she was always the one -- she's the leader, the one that would tell you what to do, what not to do," Patridge said.

"So now it's kinda like we all get... you kinda get to make your own choices and be your own self," she added.

Montag and Conrad clashed during "The Hills'" original run on MTV.

Montag recalled Conrad's famous "I want to forgive you, and I want to forget you" line in an interview with Entertainment Tonight published Monday.

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"It was really a backstabbing moment for me. Like, 'We don't have the friendship that I thought, and I guess it is better for us to both kind of move on because I don't really need a friend like that either,'" she said.

Montag said she kept in touch with Conrad "off and on for a while" after "The Hills" ended in 2010 but hasn't spoken to the star recently.

She and husband Spencer Pratt teased renewed drama with their co-stars in the reboot.

"It's a volcano," Montag said.

"Oh my god, these are people that I have been avoiding these conversations [with] for 10 years," Pratt added. "It's like, 'Oh, I didn't forget. I have a notebook.'"

"The Hills: New Beginnings" will premiere on MTV on June 24 and features returning stars Montag, Pratt, Patridge, Stephanie Pratt, Whitney Port, Jason Wahler and Frankie Delgado.

"The O.C." alum Mischa Barton will also join the cast as a newcomer.