Behind the Scenes at Alicia Keys new video 'Love Affair'!

ALICIA KEYS is reliving her 'School Daze' for her all-new music video, "Teenage Love Affair," and ET is behind the scenes in New Jersey!

"Teenage Love Affair" is the third single off of Alicia's hit album As I Am, in stores now, and the video pays special homage to SPIKE LEE's college comedy from 1988.

"It really tells the story of when you first fall for somebody," she explains to ET. "You know how it feels: you're on the phone all night; when you see them in those special places, you get that feeling and you try to meet them as much as possible -- that whole first love kind of thing."

Just back from touring Europe, Alicia is kicking off her two-month North American tour (with "American Idol" winner JORDIN SPARKS opening up) on April 19 in Hampton, VA.

"Being able to see all those faces out there singing at the top of their lungs, it really shows me how we've connected through this music," says Alicia, adding, "The tour is a workout ... that stage is really, really big, so I feel like I just jogged a basketball court!"