Unless it's purely a PR stunt, it seems to be official that Harry Styles and Kendall Jenner are dating. People magazine reports that the One Direction singer and reality star were photographed hitting the ski slopes together in Mammoth, Calif. on Friday, with some definitely flirting going on.

Styles and Jenner are currently staying with a group of friends at a house nearby, having arrived in Mammoth on New Year's Day.

"Kendall snowboarded and Harry skied. They were very cute together. There was a lot of flirting and smiling going on," an eyewitness told the magazine. "Harry was a gentleman and even offered to carry Kendall's snowboard to the ski lift. [Harry] was trying to stay low-key and kept his ski goggles and hat on the whole time. He didn't remove his goggles until he got back to the car, after hours on the slopes."

Afterwards, the teens posed for photos with fans (separately) at a snowboard shop.

While 19-year-old Styles has remained tight-lipped on whether or not he's dating 18-year-old Jenner, having answered CNN's Piers Morgan's question on whether the two are together during an interview with a vague, "Dunno," insiders have reported that Styles has been spending around the Kardashian clan, including father Bruce Jenner, and has even prompted brother Brody Jenner to give his take on the relationship, friendship or otherwise.

"I hate to tell you this, but Kendall will be doing the heartbreaking," Brody Jenner told the New York Daily News' Confidenti@l last month. "I'm sure she's having a fun time with him. She has a very level head, great head on her shoulders. But they are both so young."

Click here to see photos of Harry Styles and Kendall Jenner skiing together in Mammoth, Calif.