Los Angeles, Aug 21 (IANS): Television presenter Khloe Kardashian's younger brother Rob reportedly had a face-off with his sister's basketball player husband Lamar Odon about his recent cheating scandals.

Lamar was accused twice of infidelity by two different women. However, his marriage with Khloe is still intact. But when Rob demanded an explanation, the basketball player refused to answer.

"Rob confronted Lamar and it got heated very, very quickly. Rob and Lamar have been close since he came into Khloe's life," radaronline.com quoted a source as saying.

"When Rob asked Lamar point blank if he had cheated on Khloe with criminal defence attorney, Polina Polonsky, he refused to answer the question. Rob grew angrier that Lamar didn't respond, and he ended up just leaving the house," the source added.

Rob is very protective of Khloe and is supporting her in these difficult times.

"A lot of people bash Rob, but he truly has his sister's back, and is very protective of her. Rob has been continuing to stay with Khloe, and has been a big source of support for her at this very difficult time," a source said.