Given many Hollywood stars’ capricious dating tendencies, it’s not surprising that real-life couples will sometimes end up in films together. Sometimes (and the reason for this evades us), they even encourage it. 2010 offered up a perfect example of this in Going the Distance, starring Justin Long and Drew Barrymore. The pair was attached in 2007-2008, but later split before coming back together in 2009. In the 2010 romantic comedy, they play a couple trying to cope with a long-distance relationship. While some critics praised their obvious chemistry, the overall consensus was that the film did little to separate itself from the pack.However, Going the Distance is a masterpiece compared to Gigli, often considered one of the worst movies ever made. The 2003 flick starred real-life couple Ben Affleck and Jennifer Lopez. Affleck plays a low-level mobster. Lopez plays some sort of freelance agent, hired to replace Affleck on a job. Despite the fact that Lopez’s character is a lesbian, the two rocket through a bizarre plot that culminates in their romantic entanglement. Among the almost unanimous negative reviews, critics regularly cited the fact that the pair didn’t have good chemistry. Some things just don’t translate to the screen.However, not all couples have fallen prey to the on-screen curse. There have been several examples of films that managed to rise above, and sometimes even play off of, their stars’ romances. In 2006′s The Break-Up, Vince Vaughn and Jennifer Aniston provided a sly look at the falling out between a seemingly perfect couple. Aniston no doubt drew from her prior relationship with Brad Pitt and its well-documented break-up (associated with the film Mr. and Mrs. Smith, where Pitt met future partner Angelina Jolie).One of the best films to arise from the chemistry of its on/off-screen pair is Annie Hall, just one of the many collaborations between Woody Allen and actress Diane Keaton (others include Love and Death, Manhattan, and Sleeper). While their real-life relationship didn’t last, their cinematic contributions are still considered some of the most romantic ever made. There’s a strange kind of poetry in that, if you ask us.