"American Idol" winner Jordin Sparks has fallen for fellow "AI" contestant Chris Richardson — but her family is determined to keep them apart!

"Jordin is crazy about Chris," said a pal.

"They're on the 'American Idols Live' concert tour together, and Jordin can't stop flirting with him backstage."

But Jordin's mom — who is accompanying her on the three-month tour — thinks Chris is "too experienced" for her 17-year-old daughter, reveal insiders.

"Chris is 23 and already had a fling with The Hills actress Lauren Conrad," said a pal. "But Chris, who's been compared to Justin Timberlake, knows how to turn on the charm. And it's working on Jordin."

Pick up the ENQUIRER for more details!