1. When Ben had sex with his wife while his girlfriend was hidden in the closet in He's Just Not That Into You.
2. The timeline in Sliding Doors when Helen died.
3. The moment Karen discovered her husband's affair in Love Actually.
4. The "who deserves the last brownie" scene in Notting Hill.
5. When Nicki found Erin's suicide note in What Women Want.
6. When Tim went back in time to say goodbye to his dead dad in About Time.
7. Gareth's sudden death in Four Weddings and a Funeral.
8. When Vivian was almost sexually assaulted in Pretty Woman.
9. When Olive's fake date forced himself on her in Easy A.
10. When Amy's dad died unexpectedly in Trainwreck.
11. When Jenna realised she ruined her chances with Matty in 13 Going On 30.
12. The dark origins of the curse in Penelope.
13. When it was revealed that Meryl cheated on Paul in Did You Hear About the Morgans?
14. The scene in To All the Boys I've Loved Before when Lara Jean opened up about losing her mum.
15. When Emma died suddenly at the end of One Day.
16. The scene where Elle was propositioned by her professor in Legally Blonde.
17. When Nick's mum told Rachel she wasn't good enough for him in Crazy Rich Asians.
18. The scene where Rosie miscarried in What to Expect When You're Expecting.
19. The violent end to the scene where Mark was confronted in The Other Woman.
20. In Forgetting Sarah Marshall, when Sarah spoke to Peter about his depression.
21. When Rosie's dad died in Love, Rosie.
22. When Darcy discovered that her fiancé and best friend were having an affair in Something Borrowed.
23. Abbie's fate at the end of Irreplaceable You.
24. And finally, the strange and unsetting ending of 50 First Dates.
Note: Some submissions have been edited for length and/or clarity.