Romance rumors are continuing to swirl around 17-year-old Kylie Jenner and 24-year-old rapper Tyga. The two have been attached at the hip lately and were most recently seen hanging out in Athens, Greece.

Jenner has been traveling with the "Hookah" rapper while he's on tour, according to reports.The two arrived at England's Gatwick Airport together on Oct. 17 before traveling to Bordeaux, France, TMZ reported.

From there, the young stars hopped a flight to Geneva, Switzerland, later arriving in Athens on Oct. 19, where Tyga had a performance. While some reports claim that the trip was romantic, a source told Hollywood Life that it was more "educational" than romantic.

Reportedly, he's been mentoring Jenner because she wants to break into the music business.  

"It's all educational, if you will," the source told Hollywood Life. "Tyga believes Kylie is on the verge of being a huge breakout pop star, and that she should see firsthand what it's like to live that life."

"He's testing her," the source added. "Seeing if she's down with all the impromptu flying, the late hours, the fact that you really get no sleep. He also wants her to see how it's done, how she'd have to be on stage, controlling the crowd and keeping them engaged while performing."

Kylie's mom, Kris Jenner, wanted to clear up the romance rumors - and promote her new book "In The Kitchen With Kris: A Kollection of Kardashian Jenner Family Favorites" - so she stopped by Ryan Seacrest's radio show.

"Kylie isn't dating anybody," Kris said on Oct. 21. "This whole little group of kids who have been around forever, and I call them kids because relatively speaking, they kind of all travel as a pack and they enjoy each other's company. We all live in the same neighborhood. [Tyga] used to live across the street for a long time, and now he lives next door to Khloe [Kardashian]. Everyone's always around and with the way I cook, they're not leaving."