The 18-year-old reality star's older brother Brody Jenner recently spoke to the New York Daily News about her dalliance with the boy band singer and didn't seem to have high hopes for their future together.
"I hate to tell you this, but Kendall will be doing the heartbreaking," her 30-year-old half-brother said. "I'm sure she's having a fun time with him."
Then again, Brody might not be the best resource on their budding romance, because he hasn't even met Styles yet. "It sounds like a match made in heaven," Jenner said. "That's what it sounds like, but I've never met him."
Well, if Harry and Brody do rubs elbows this Xmas, at least they'll have something to talk about:
Harry: So... I hear your sister is using me?
Brody: Absolutely. It's a family tradition. Have some more eggnog.
On the plus side, that means Directioners who have been patiently biding their time for the moment to strike may be able to weave themselves into the story of his life sooner than later.