Robert Downey Jr. and Sarah Jessica Parker
Even Carrie Bradshaw and Iron Man as a pair would make more sense than Sarah Jessica Parker and Robert Downey Jr. The two dated when they were both young and separated because Downey, who had allegedly been addicted to drugs since the ripe age of 8, couldn't quit his rock(s) and roll(ing) ways. He says that SJP kept trying to fix him, but he wasn't having it. Why did she stick around? Maybe she needed those 7 years to get the bad boy cravings out of her system.