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"American Idol" crooner Jordin Sparks assures her boyfriend Jason Derulo that he'll climb higher on the charts than her in a joint interview the couple had with the Hollywood Reporter at the 2012 AMAs. Derulo and Sparks began dating earlier this year and the "No Air" singer certainly seems smitten, even if the new relationship had her questioning her steadfast purity vows. According to AOL Music's In House interview with the Battlefields creator, their relationship is based on mutual "obsession." Wonder if there will be wedding bells in the future sometime soon? Both singers are only 22, but being young hasn't stopped a lot of other stars from getting engaged recently!