According to TMZ, this is what Khloe claimed on a episode of her TV Show, Kocktails with Khloe'. Here's how they reported it. 
"James Harden is being called out by Khloe Kardashian - who says James begged her to be in an exclusive relationship ... only to cheat on her ass!
KK put Harden on blast on "Kocktails with Khloe" on FYI -- saying the Houston Rockets star was so into her, that he sweet talked her into monogamy -- and then screwed her over. "He sought me out, he wanted to be committed ... then wasn't committed."