Jane Eyre: distant man, world-wounded man is transformed by pure and simple love Gone with the Wind: a man knows a woman completely and still loves and wants her An Affair to Remember: Cary Grant and Deborah Kerr: crisp,chemistry, sentimental.... except for the godawful section with the children's chorus, directed by Deborah Kerr from her bed.
The first couple that came to mind was Romeo and Juliet. Next was Antony and Cleopatra because Antony sacrificed so much for her. Napoleon and Josephine because of how their love developed. Also, I thought of Odysseus and Penelope because of Penelope's fidelity. Helen of Troy and Paris, because her love resulted in the Trojan War. What about Rhett Butler and Scarlet O'Hara--theirs may have been the fieriest ? The truest romance is probably Romeo and Juliet's because theirs is the most tragic and the others I mentioned had other lovers.
Since Josephine was responsible for the interment of their remains together in the Pere Lachaise in Paris, Abelard and Heloise deserve a mention. While our sensibilities may recoil at the details of the relationship, there's no doubt that Poe loved Virginia Eliza Clemm deeply, perhaps to the point of madness. Given that her early death probably inspired "The Raven" and "Annabel Lee", I'd say theirs is a pretty famous love story. Personally I'd remove Romeo and Juliet from the list and replace them with Orpheus and Eurydice. The guy tamed Hell for her! That's love, even if he couldn't keep his eyes front.