The 'Keeping Up with the Kardashians' star is furious her husband of four years has been accused of having affairs with two different women and told him he must prove himself to her.
A source told the US edition of OK! magazine: ''Things have never looked worse but Khloe wants to know the truth and if it means getting Lamar to do a polygraph test then so be it. Lamar is appalled and totally offended by the idea.
''Every time she starts grilling him, Lamar hits the roof and accuses her of not trusting him. Then he just clams up or hangs up. He hates confrontation.''
The 29-year-old reality TV star is hopeful allegations Lamar cheated on her with Jennifer Richardson for a year until March 2013 and also had a six-week long affair with lawyer Polina Polonsky at the start of the summer are simply lies.
The insider added: ''She really loves Lamar and is still clinging to the dream of having a happy marriage and children with him but right now everything is in total chaos.''
Khloe and Lamar, who has an estimated fortune of $56 million from his 14-year basketball career, reportedly signed a pre-nuptial agreement with a built-in cheating clause that would see her secure $500,000 for every year they were married if he is unfaithful to her.
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