Khloé Kardashian wants Lamar Odom ''to go away.''

The 30-year-old beauty, who is waiting for a judge to finalise her divorce from the former NBA star, reportedly believes he is ''trying to ruin her new happiness'' with boyfriend James Harden.

A source close to the 'Keeping Up with the Kardashians' star told E! News: ''Khloé just doesn't communicate with him and wants it to go away.

''The divorce was really hard on her and she finally let go and it took her two years. He's trying to ruin her new happiness and trying to make her feel guilty.''

The former couple split in December 2013 after four years of marriage amid allegations Lamar, 35, was addicted to cocaine and cheating with multiple other women, and while they recently signed their divorce papers, Lamar claims they are still in regular contact and Khloé is his ''soulmate.''

The basketball player was accused of ambushing his estranged wife and shouting abuse at her outside her gym in Beverly Hills last week, but he told the new issue of InTouch magazine: ''A misunderstanding between me and my wife became public. It's hurtful. That woman is my wife. Without the ring on my finger. [Even] with her picture being taken with another man, that woman is my wife.

''She's [my] soulmate. I can't control it. We'll never part. I would never consider myself serious with another woman. To sum it up, if a man is attempting to court Khloé, he's probably wasting his time.''

A source previously claimed the reality TV star's family has urged her to secure a restraining order against the athlete.