The model, 25, shared a pic of herself laughing on top of a kitchen counter while Booker laid on top of her. Jenner simply added a small white heart emoji alongside Booker's Instagram handle to her Story.
Booker also took to his respective Instagram and posted a video of his brunette babe playing with her dog in the backyard as the sun set. He added an orange heart emoji and Jenner's Instagram handle before sharing another snap of the duo and the dog lying on the grass together.
While the good-looking couple has reportedly been dating on the down-low for ten months, they finally decided to confirm their relationship on Sunday, February 14.
Jenner and the Phoenix Suns player, 24, were first spotted together on a road trip to Sedona, Ariz., last April. One month later, the KUWTK reality star was seen picking up her handsome hunk at the airport. Rumors of their alleged romance began to pick up after Booker left a cheeky message on Jenner's Instagram post in August.
Jenner posted a photo of herself, which she captioned with a strawberry emoji. "I like strawberries," Booker commented. In response, Jenner replied with four strawberry emojis.
Booker has also already been welcomed into the Kardashian-Jenner famous family, as he attended Kim Kardashian's $1 million private getaway for her 40th birthday. "It’s easy because they get along well and he also gets along great with her family," an insider previously shared of the couple's romance.
And while her famous sisters' tumultuous romances often make headlines, Jenner has put in quite the effort to keep her relationships out of the public eye. "For me, a lot of things are very special and very sacred, like my friends and relationships,” she told Vogue Australia back in 2019. “And I personally think that bringing things into the public makes everything so much messier."
Jenner previously had an on-again-off-again relationship with NBA star Ben Simmons before calling it quits for good in 2019. The stunner also shared a long history with Harry Styles. She and the "Golden" crooner were first linked in 2013 and have been spotted spending time together over the years.