The reality star, 32, looked stylish as ever, rocking a pair of thigh-high leopard print boots, a white jersey dress and a fur-stoled green arm coat.
She documented much of the evening in Snapchat videos, cheering loudly for her new love along with thousands of fans as he accepting his honor and the championship banner was raised at Ohio’s Quicken Loans Arena.
Kardashian even snapped shots of a commemorative champion trophy cutout and a personalized bottle of rose encrusted in gold with Thompson’s name and team number.
Later in the night, Kardashian was courtside to watch Thompson and his team play the New York Knicks at the season opener. The Caves dominated the game, taking down the Knicks 117-88.
On the ride home, Kardashian and Thompson flaunted their mutual bling — in a shot shared both on Snapchat and Instagram.
His ring features the red Cavaliers’ “C” wrapped around the golden Larry O’Brien trophy on one side and the Cleveland skyline on the opposite side. The words “World Champion” are spelled out in gold, while the background is filled with diamonds.
Her left finger finger was stacked with three sparkly diamond bands surrounding a colorful Cavaliers ring.
Now that her marriage to Lamar Odom is over, Kardashian is putting her full attention on her new man.
The Keeping Up with the Kardashian star’s romance with Thompson has been heating up for months, but things are taking a serious turn now that Kardashian is a single woman.
“Khloé has been spending a lot of time in Cleveland with Tristan,” a source previously told PEOPLE. “She’s very supportive of him, and they are getting serious. They really dig each other a lot, and she’s planning to spend more and more time out there with him.”
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“You know, they’re both very giving and very kind,” she added. “They take great care of their friends and their families. They love to enjoy themselves. They both work very hard. They have a lot of things in common, and they’re extremely supportive.”
“And when they’re together, they have fun,” Malika’s sister Khadijah chimed in.