The reality TV star and her spouse of four years are living separate lives amid rumours of a marriage breakdown.
"They're separated for the moment," a source told PEOPLE magazine. "Khloé is spending many nights at her mom's house and Lamar is at his place [in] downtown [L.A.]"
NBA player Lamar was recently detained for "driving under the influence of alcohol and/or drugs", according to reports. Shortly afterwards, he hit headlines for checking out of rehab after just one day after seeking help for his drug and alcohol abuse.
A friend of 29-year-old Khloé says that Lamar's friends "thought Khloé saved him. But in reality she never even knew about his drug issues."
"The whole situation is so sad," the friend continued. "She wants to save her marriage, but Lamar doesn't and he's not in his right mind to do so. So what can Khloé do?"
Another source, a longtime friend of the Kardashian family, thinks that Lamar wants to call time on his marriage to Khloé.
"I believe Lamar is the one who wants out [of the marriage]. It's not looking good."
Despite the continued speculation about the state of her marriage, it's business as usual for Khloé. The youngest of the Kardashian sisters has been sharing photos of her and her famous siblings and celebrity friends on her Twitter account.
At the end of August, Khloé's troubled husband was pulled over on the motorway in his white Mercedes 4x4 for going too slowly and was taken to a nearby police station by the California Highway Patrol and held on $15,000 bail.
Police say that the NBA player had been driving in a "serpentine manner", TMZ reported.
Lamar initially ignored the authorities and drove past three exits before coming to a stop, at which point he "showed obvious signs of intoxication".
His loyal wife is said to be determined to help her husband of four years get his life back on track as he struggles to overcome substance abuse issues.