By Alynda Wheat
August 06, 2012 12:00 PM

>It was the little dance movie that could. In 2006 the original Step Up not only launched Channing Tatum’s career as one of Hollywood’s leading heartthrobs, it also landed him a wife in costar Jenna Dewan, 31, whom he wed three years later. Earning $65 million, the film “completely changed my life,” says Tatum, 32. “It wasn’t easy after that. It’s not like I got everything I wanted, but it was the genesis.” Now the film serves as a history lesson for the couple. “I know where we were in our relationship in every scene,” he says. “I just fell head over heels.”