Kendall Jenner and A$AP Rocky are dating, source says reality star is 'happy'

Looks like the Kendall Jenner and A$AP Rocky romance rumors are true!

After months of speculation, a source close to the 21-year-old reality star tells ET that she's dating the "Fashion Killa" rapper.

WATCH: Kendall Jenner and A$AP Rocky Reunite in Paris, the City of Love

"I don't think you will be seeing them make a public announcement anytime soon, but there is something going on there for sure," the source added. "It's been going on for a while. Kendall is happy."

Jenner and Rocky, 28, were recently spotted together at fashion's biggest night, the Met Gala in New York City on Monday. Though they didn't walk the red carpet together, they had no problem packing on the PDA inside the party.

In a photo posted to sister Kim Kardashian West's Snapchat, you can see Rocky grabbing Jenner's booty, which was on full display in her sheer La Perla gown and embellished black thong. Her youngest sister, Kylie Jenner, sneaked in a snapshot of the flirty moment, too!

The pair were also posing together in the lip kit maven's epic bathroom selfie, alongside stars like Paris Jackson, Brie Larson, P. Diddy and Frank Ocean.

Hear more on their fun night out in the video above!

WATCH: Kendall Jenner and A$AP Rocky Pack on the PDA at the Met Gala and After Party