'Twilight' Screenwriter Melissa Rosenberg Spills Biggest Script Regret: Edward Cullen's 'Spider Monkey'

“The Twilight Saga” has already ended on the big screen, but there is still something about the first film in the franchise that bothers its screenwriter, Melissa Rosenberg.

Rosenberg told Us Weekly that a line said by Edward (Robert Pattinson) still puzzles her up to now. “In the first movie, there's something about, 'Be my spider monkey,'” Rosenberg said. “I'm like, 'Spider monkey? What the hell is 'spider monkey?'”

The screenwriter also mentioned that there were also scenes in either the first or second film where “monkey” was mentioned. Rosenberg said she did not know who gave her the instructions to add the word to the lines, but she clarified that it was definitely not her who had an obsession with the animal.

Rosenberg also said that she has a bit of regret that she did not pursue getting producing powers in the series based on Stephenie Meyer's books. Still, the writer said she's happy with the experience especially since it was a rather big project.

Prior to writing the screenplays for “Twilight,” “The Twilight Saga: New Moon,” “The Twilight Saga: Eclipse,” “The Twilight Saga: Breaking Dawn – Part 1” and “The Twilight Saga: Breaking Dawn – Part 2,” Rosenberg was a member of the writing staff of “The O.C.” She also wrote the screenplay for 2006's “Step Up.”

Rosenberg is currently the showrunner of Netflix's "Jessica Jones," according to LA Weekly.

Kristen Stewart, who played Bella, does not regret being part of the franchise either. But the actress admitted that the fame brought by the series had a negative effect on her.

“I went through so much stress,” the actress told Elle. “I had panic attacks, I used to puke every day and very casually, too. I couldn't anticipate what was going to happen in a given situation, so I'd be like, 'Maybe I'm going to get sick,' and then I'd be sick.”

The last installment in the “Twilight” series hit theaters in 2012.