If you think you know everything there is to know about these popular romantic comedies, think again! Surprises await you around every corner.

Every corner.

#12. Jack Black wasn’t excited about High Fidelity.

Image Credit: Buena Vista Pictures

He might have nailed it, but director Stephen Frears had to talk him into taking the job.

#11. Cameron Diaz had trouble getting behind the hair gel scene in There’s Something About Mary.

Image Credit: 20th Century Fox

She worried audiences would be totally grossed out and it would ruin her acting career, but after test audiences laughed hard at the gag, she decided it was okay.

#10. When Gregory Peck agreed to share billing in Roman Holiday, he did so with an unknown actress.

Image Credit: Paramount Pictures

Audrey Hepburn was a newcomer, while Peck had 18 films and 4 Oscar nominations under his belt. It’s said he recognized Hepburn’s talent and wanted to make sure he didn’t make a fool of himself when she won “the Oscar in her very first performance.”

#9. Meet the Parents inspired the toilet training of cats everywhere.

Image Credit: Universal Pictures

Okay, maybe not, but it did inspire the idea behind Litter Kwitter, a toilet training tool for cats.

#8. The epic fight scene in Bridget Jones’ Diary wasn’t scripted.

Image Credit: Working Title Films

You can thank Firth and Hughes for that bit of hilarity; they improvised the whole thing.

#7. Meg Ryan got her first computer while filming You’ve Got Mail.

Image Credit: Warner Bros.

She told Vanity Fair that “the company gave us a computer.”

#6. Julia Roberts turned down the lead role in While You Were Sleeping.

Image Credit: Universal Pictures

No word on why, though I’m sure Sandra Bullock was happy!

#5. My Big Fat Greek Wedding broke a few records.

Image Credit: IFC Films

It was the highest-grossing rom-com in history, making $241,438,208 in the U.S. alone. It was the highest grossing movie to never be number one at the box office and, with high gross revenue as well, one of the most profitable movies ever made.

#4. Clueless is part of an unofficial trilogy.

Image Credit: Paramount Pictures

Amy Heckerling wrote the trifecta of Fast Times At Ridgemont High, Clueless, and Loser.

#3. Julia Roberts also turned down the lead in Sleepless in Seattle.

Image Credit: Columbia TriStar

She thinks Meg Ryan and Tom Hanks were “a jewel of a fit,” though, so everything turned out ok.

#2. Legally Blonde got a sequel because of test audiences.

Image Credit: MGM

The original film ended with Reese Witherspoon and Luke Wilson kissing on the courthouse steps, then cutting to Elle and Vivian forming a “Blonde Legal Defense Club” but audiences were too invested to enjoy the conclusion.

#1. Love Actually‘s opening and closing shots were done with hidden cameras.

Image Credit: Universal Pictures

The footage of passengers being embraced by loved ones at Heathrow, and when a moment was captured that looked good, crewmembers rushed to get a waiver signed so it could be included.

Did you learn something new? I know I did!