AceShowbiz -

Things between Kylie Jenner and PARTYNEXTDOOR seem to be heating up. A source close to the couple told Us Weekly that the pair are getting more serious. "They're talking and texting nonstop," the insider said. "He's as into her as she's into him."

The 18-year-old star and the Canadian rapper were first spotted together at a comedy show in Hollywood on May 18. They then stepped out to go bowling together on May 25. The two sent the internet into a frenzy when photos of them cozying up to each other at Drake's wild Memorial Day party surfaced online.

"They were introduced by Drake. And they were all over each other at his party, even though Kylie initially thought that this would be a rebound," a source said following the PDA-filled bash.

Kylie called it quits with Tyga early last month. "They still text and share a group of friends, but there's not a relationship-y vibe between them anymore," another insider said. "She doesn't care about Tyga like she used to. As far as Kylie is concerned, Tyga can go do this thing."

While Kylie seems to be embracing her new relationship with PND, Tyga has been linked to some beautiful models. Most recently, the "Make It Work" rapper was rumored to be dating Kanye West's Yeezy model Amina Blue after the two enjoyed an exotic vacation in the Caribbean.