1. Casablanca (1942) Popperfoto / Getty Images Because, kid, you need to learn about love and sacrifice. 2. Terms of Endearment (1983) Archive Photos / Getty Because you won't always know how to show your feelings. 3. From Here to Eternity (1953) Columbia Pictures / Getty Images Because you'll need to learn how to really kiss someone. 4. Ghost (1990) Archive Photos / Stringer / Getty Images Because sometimes you can't grow old with the one you love. 5. An Affair to Remember (1957) Archive Photos / Getty Because six months is a long time, but forever is even longer. 6. Pretty Woman (1990) Hulton Archive / Getty Because love knows no occupation. 7. Some Like it Hot (1959) GAB Archive / Getty Because you’ll do anything for the person of your dreams, which includes cross-dressing. 8. Wall-E (2008) Pixar / Disney Animations / Via skymovies.sky.com Because you'll go to the ends of the earth (or galaxy) for the one you love. 9. Jules and Jim (1962) Archive Photos / Getty Because you'll have friends, and you'll have lovers. Sometimes it'll be hard to distinguish between the two. 10. Gone with the Wind (1939) Silver Screen Collection / Getty Because if you hide your feelings for too long, it might be too late. 11. His Girl Friday (1940) Archive Photos / Getty Because you’re going to get stuck in at least one love triangle. 12. Brokeback Mountain (2005) Focus Features / Via bipolarbear.com.au Because you can't always choose your soulmate. 13. Sabrina (1954) Archive Photos / Getty Because all's fair in [brotherly] love and war. 14. Annie Hall (1977) Brian Hamill / Getty Because if Woody Allen can find romance, so can you. 15. City Lights (1931) John Kobal Foundation / Getty Images Because love is not determined by money. 16. Bonnie and Clyde (1967) Archive Photos / Getty Because there are consequences to everything. 17. For Love of Ivy (1968) GAB Archive / Getty Because still waters run deep. 18. Sleepless in Seattle (1993) TriStar Pictures / Via cfpn.tv Because blind dates occasionally work out. 19. It Happened One Night (1934) Columbia Pictures / Via movieclassics.wordpress.com Because you'll need to be a good judge of character. 20. West Side Story (1961) Mirisch Pictures / Via kickseat.com Because you'll fight for the one you love. 21. The Lady Eve (1941) John Kobal Foundation/ / Getty Because temptation is everywhere. 22. Eternal Sunshine of the Spotless Mind (2004) Focus Features / Via filmtotaal.nl Because you shouldn't forget your first love. 23. The Apartment (1960) United Artists / Via brightwalldarkroom.com Because you should abandon your bachelor lifestyle sooner rather than later. 24. Breakfast at Tiffany's (1961) Silver Screen Collection / Getty Because sometimes you need a reminder that no one will feel lost or lonely forever. 25. Roman Holiday (1953) Hulton Archive / Getty Because love is life's most difficult adventure. 26. Love Story (1970) Silver Screen Collection / Getty Because you might fall for your best friend. 27. The Philadelphia Story (1940) Archive Photos / Getty Images Because you'll need a guide to finding a relationship... and inadvertently yourself, too. 28. When Harry Met Sally (1989) Columbia Pictures / Via doyouremember.com Because you never know when you'll have to fake it.