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Kim Kardashian's found a new guy to keep up with: Halle Berry's model ex Gabriel Aubry. A pal tells that the duo, who were spotted flirting at Sunday's L.A. Lakers game, are the real deal.

"They met through friends and have been dating a few weeks," says the source. "It's sexy!" Adds the insider, "They decided to step out together at the game."

The hot Gucci model, 34, is not the first guy the reality star, 30, has been linked to since splitting with Reggie Bush in March. After a summertime romance with football hunk Miles Austin, Kardashian has been dating casually -- including a few recent nights out in NYC with singer John Mayer.

Aubry, meanwhile, has been laying low since he and Berry, 43, ended their four-year relationship in late April, although he and the Oscar winner spent some time in Paris with daughter Nahla, 2, in August. Berry has since gotten cozy with her Dark Tides costar Olivier Martinez.

The budding romance has already gotten a thumbs up from Kardashian's pal Jonathan Cheban. "I can't wait to hear all about it," the SPINdustry star told Us at a Lorraine Schwartz event Monday night. "I hope they're together so I don't have to go to football games anymore!"