Things are starting to really heat up on the "American Idol" concert tour -- backstage!
TMZ has learned that "Idol" winner Jordin Sparks has fallen head ovah heels for Justin Timberfake wannabeen Chris Richardson! This is her now! While she and runner-up Blake Lewis are just friends, we're told Jordin has a huge crush on 23-year-old Richardson -- despite his penchant for late nights and hanging out with the likes of Lauren Conrad. Boys will be dogs!
Sources on the tour tell us that because Jordin is only 17, her minders and family members are doing everything they can to keep from letting anything -- or anyone! -- get in the way of the underage star's bright future. Sexy and 17 -- and off limits!