Kendall Jenner might be famous for modeling and appearing on Keeping Up With The Kardashians, but her niece Stormi Webster is more infatuated with her boyfriend and NBA star, Devin Booker. The duo, who have been dating since June 2020, has been keeping their relationship hidden from the public eye. Kendall is notorious for keeping her love life under wraps, but Devin is the first boyfriend she's made things Instagram official with. He's also the first man Kendall has publicly dated for over a year.

The high-profile couple recently took their relationship to the next level vacationing in Italy before heading out to a lake in the Midwest where Devin was raised. Most recently, a video showed Kendall meeting Devin's grandmother for the first time in Moss Point, Mississippi. In the video clip, Devin jokingly told his grandmother that Kendall isn't used to the southern lifestyle. Though Kendall appeared to be a bit nervous, it seems like the couple is doing better than ever.

Related: KUWTK: Travis Scott & Kylie Jenner 'Self Discipline' Their Daughter Stormi

In a new interview with Jimmy Fallon on The Tonight Show, the 25-year-old model talked about how she became an aunt to 18 nieces and nephews in a blink of an eye. Though she tries her best to be the cool aunt, her boyfriend always ends up stealing her thunder. "He loves them," Kendall said of her boyfriend's relationship with her family. "Him and Stormi have an amazing relationship. She has the biggest crush on him, and I'm jealous sometimes. I'm like, 'Stop -- can you guys not?'"

Stormi is the daughter of Kylie Jenner and Travis Scott. The couple recently announced that they're expecting another child. On the topic of Kendall's private relationship, Jimmy asked for more intimate details in which the reality star admitted her competitive side flourishes whenever she's around Devin. She continued to explain that she played basketball in middle school so she tries to out skill him on the court from time to time. "We were playing in the pool, and he just took it way too seriously -- as did I, by the way," Kendall said. "I had the ball, and he was guarding me, and it was a whole thing. He actually ended up cutting my hand open a little bit with his nail because he took it too seriously." Though the injury was a "big gash," Kendall notes it's pretty much all healed over now.

In a world where fans are no longer Keeping Up With The Kardashians, Jimmy's interview with the model was surely an exciting one. Kendall's serious relationship sounds fun, playful, and exciting. And though she wants to keep it for herself, fans would love to get a bigger inside look into the duo's chemistry. It's only a matter of time before the couple makes their red carpet debut.

Next: KUWTK: How Kendall Jenner's Height Compares To Her Famous Sisters

Source: The Tonight Show/YouTube