updated 05/04/2014 AT 10:00 AM ET
•originally published 05/04/2014 AT 3:30 PM ET
Khloé Kardashian is still standing toe to toe with her new beau.
Though she is said to be simply “casually dating” rapper French Montana, the 29-year-old reality star decided to party in Las Vegas over the weekend – with her rumored boyfriend and little sister Kylie Jenner, 16, in tow.
While Kardashian made an appearance at Beacher’s Madhouse, the main event of her weekend was the boxing match between Floyd Mayweather and Marcos Maidana. The youngest Kardashian sister showed up to the fight with Montana and the two watched as Mayweather, with pal Justin Bieber close by, took down his opponent in a close win. (Jenner and Bieber snapped a selfie to commemorate the night.)
Following the fight, the couple stopped off at 35 Steaks + Martinis around 11:30 p.m., where Montana kept his arm around Kardashian as they led a party of 20 to a table and enjoyed dinner. Leaving the restaurant arm-in-arm, Montana calling Kardashian “baby” multiple times.