Is Khloe Kardashian dating James Harden?

Rumors sparked that the "Keeping Up with the Kardashians" star is dating the NBA player after they were photographed spending some time together in Las Vegas. The 31-year old was seen dancing with the Houston Rockets shooting guard at Chris Brown's concert on Saturday night. 

The pictures show Kardashian wearing a black dress while she danced with Harden, who donned a white shirt, dark pants and a black baseball cap for the party. 

According to People, the pair was at the Encore Beach Club prior to Brown's party and they were seen chatting as they spent time with Khloe's friend Malika Haqq, Jermaine Dupri, and former NBA star Rick Fox. 

The magazine reports that Kardashian and Harden lounged at a private cabana, and while they were not openly affectionate with each other, she was reportedly spotted sitting on the NBA star's lap before she left at around 5 p.m., and Harden was seen leaving soon after. TMZ reports that they had dinner at the Wynn Hotel's Red 8 restaurant before heading to Drai's Nightclub to catch Brown's performance. 

Meanwhile, Harden's ex, Trina, appears to be unhappy with this development and took to Twitter to air her displeasure about seeing the pictures of the two together, according to Hollywood Life. 

Harden is not the first man Kardashian has been linked to who has previously dated rapper Trina. The 36-year old rapper reportedly dated French Montana off and on for a number of years, and French Montana became very close to Kardashian that he was featured on "Keeping Up with the Kardashians" on several episodes.

A source from Us Weekly said, "Trina thinks it is funny that Khloe was hanging out with James Harden, another of her exes."

The insider added that the rapper still hasn't spoken to Kim Kardashian, who is a good friend of hers, since Khloe and French Montana got together.