Rob Kardashian is allegedly "in a dark place."

Rob Kardashian

Rob Kardashian

The 28-year-old reality TV star, who shocked fans when he compared his older sister Kim Kardashian West "to the b***h from Gone Girl" online last weekend, is said to have lashed out at his famous sibling after she and their family staged "multiple interventions" to encourage him to seek help for depression.

A source close to the 'Keeping Up with the Kardashians' star told Us Weekly magazine: "Rob is in a dark place. Kim told him he needs to get out of his funk."

The sock designer has been struggling to get his life back on track after gaining more than 50 pounds following his bitter split from British singer Rita Ora in late 2012, but friends claim he refuses to do anything about his problems.

Another insider told PEOPLE magazine: "He's sad, he's bitter, he's single and has been [for a while]. He is very against therapy and any kind of rehab. But his family will continue to push for him to get help until he does."

Rob's sister Khloé Kardashian, 30, recently admitted she is very worried about him.

She said: "I just feel, especially over the last year, Rob has become very introverted and has a kind of social anxiety."

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