When is she going to dump this loser?!

Tristan Thompson was caught being handsy with an unidentified chick at Warwick nightclub in L.A. on September 20th, and we don't know how many more of these reports Khloe needs to read before she realizes that he's never going to stop cheating on her.

"Tristan and a girl were chatting and flirting throughout the nigh. They were very touchy-feely. He had his hand on her butt," a source dished to Us Weekly.

Still, the Revenge Body star is likely to stand by her man.

"Khloé believes every word Tristan tells her. They’ll stay together," the source added.

As the reality star and baby True plan their move to Cleveland to be with TT during his NBA season, the rest of the K clan are left wondering what it's going to take for her to leave him.

"Everyone is flabbergasted, but her family has learned to keep their opinions quiet. People underestimate the threshold of what she’ll put up with for love," an insider revealed.

Unbelievable!