A former NBA player doesn't believe that James Harden's game will suffer as a result of dating Khloe Kardashian. But that may be because the relationship is about to end just as it was beginning.

Latin Post and thehollywoodgossip.com reported that the 31-year-old reality television star confronted the 25-year-old Houston Rockets' star guard about a rumored tryst with an Australian student in Sydney shortly after Harden and Kardashian had a secret rendezvous in Hawaii.

James Harden already accused of cheating on Khloe Kardashian

"After the woman went public claiming she hooked up with James after he started dating Khloe, there was a confrontation," says one insider. "James denied hooking up with the woman, but Khloe just doesn't believe him."

James Harden's dress on dates with Khloe Kardashian leaves a lot to be desired

Kardashian did believe Harden would admit to the affair, but his answers to her questions were "evasive."

Thehollywoodgossip.com went on to say that Kardashian has been trying to force a relationship with the basketball star despite their age difference because "she feels that it's a bad time for her to be alone."

"Khloe had really wanted to be in a new solid, healthy relationship by the time her divorce was made final," the source claims. "She just feels very unlucky in love."

Earlier, former NBA player Sidney Wicks told TMZ Sports that he believes Harden can handle a high-profile relationship with the likes of Kardashian because he believes Harden has the ability to separate his professional life from his personal life.

It has been Khloe, however, who has been talking a lot about her ex-husband, former NBA star Lamar Odom, in the wake of their divorce that was finalized last week after being filed almost two years ago.

There was a rumor that Kardashian was pregnant with Odom's child, which a source close to Kardashian denied. But she has admitted to thinking about him often and declaring her love for him even though she broke off their relationship because of his substance abuse problems.

Ironically, both Odom and Harden attended the same concert at a Las Vegas nightclub earlier in the month, fueling speculation that Kardashian had been seeing both.

Rochelle Relf, a 23-year-old student, told Yahoo! Lifestyle's New Idea website that she met Harden at a casino in Sydney in June and that the two slept together. She said she didn't know initially that he was a celebrity but exposed him when she found out he was dating Kardashian because Relf "hates cheaters."