101 industry experts in total have contributed to the list, which seeks to combine quality with knock-em-dead sentimentality.
Dave Calhoun, Time Out London’s film editor comments, "What makes the Time Out list so exciting and unusual is that it's not just the opinion of three sun-starved film critics sitting in a darkened room and writing a list. Instead, we got off our sofas and asked 101 real experts in movies and romance for their personal take on the matter -and our top 100 romantic films reflects their very personal choices."
Click here for the full story and complete list and, in the meantime, see if you can guess what made the top 3... it's probably not what you think!
10. Punch-Drunk Love (2004)
A psychologically troubled novelty supplier is nudged towards a romance with an English woman, all the while being extorted by a phone-sex line run by a crooked mattress salesman, and purchasing stunning amounts of pudding.
9. Eternal Sunshine of the Spotless Mind (2004)
A couple undergo a procedure to erase each other from their memories when their relationship turns sour, but it is only through the process of loss that they discover what they had to begin with.
8. A Matter of Life and Death (1946)
A British wartime aviator who cheats death must argue for his life before a celestial court.
7. The Apartment (1960)
A man tries to rise in his company by letting its executives use his apartment for trysts, but complications and a romance of his own ensue.
6. Brokeback Mountain (2005)
The story of a forbidden and secretive relationship between two cowboys and their lives over the years.
5. Harold and Maude (1971)
Young, rich, and obsessed with death, Harold finds himself changed forever when he meets lively septuagenarian Maude at a funeral.
4. Annie Hall (1977)
Neurotic New York comedian Alvy Singer falls in love with the ditsy Annie Hall.
3. In the Mood for Love (2000)
A man and a woman move in to neighboring Hong Kong apartments and form a bond when they both suspect their spouses of extra-marital activities.
2. Casablanca (1942)
Set in unoccupied Africa during the early days of World War II: An American expatriate meets a former lover, with unforeseen complications.
1. Brief Encounter (1945)
In the most romantic film ever, as voted by readers of Time Out magazine, a woman (Celia Johnson) meets a stranger in a railway station, and is tempted to cheat on her husband. And that's it. A thousand hankies at the ready...