Rob Kardashian Confronts Lamar Odom Over Cheating Scandal?

Rob Kardashian confronted Lamar Odom over the allegations that the NBA player has been cheating on his wife, Khloe Kardashian, RadarOnline reported Tuesday.

The site reported that the in-laws got into an explosive argument because of the rumors. More than woman has claimed to have engaged in a sexual relationship with Odom.  The two men were previously close after Rob had lived with the couple for several years, but he was allegedly not afraid to come to his sister's defense.

"Rob confronted Lamar and it got heated very, very quickly. Rob and Lamar have been close since he came into Khloe's life," the source said.

The insider added that Rob asked his brother-in-law point blank if the women were telling the truth. Apparently, Odom's refusal to answer led Rob to storm out of the house.

"Rob grew angrier that Lamar didn't respond, and he ended up just leaving the house. A lot of people bash Rob, but he truly has his sister's back, and is very protective of her," the source said.

The site added that Rob is staying with Khloe after she allegedly kicked Odom out of their home because of the cheating rumors. Odom was also noticeably absent for Kylie Jenner's recent 16^th birthday.

"Rob has been continuing to stay with Khloe, and has been a big source of support for her at this very difficult time," the source said.