Khloe Kardashian fled to Houston to spend time with James Harden after a run-in with her ex-husband.

The 31-year-old reality TV star was left ''emotionally shaken'' by her encounter with Lamar Odom on Wednesday (12.08.15) after he reportedly verbally attacked her outside a Soul Cycle class in Beverly Hills and the next day Khloe caught a private plane to Texas to see James.

Khloe and NBA star James, 25, only went public with their romance at her half-sister Kylie Jenner's 18th birthday party last weekend but they were spotted together at a Chipotle restaurant in Houston after her altercation with Lamar.

The 'Keeping Up with the Kardashians' star is waiting for a judge to officially finalise her divorce after signing and filing court documents last month following her split from professional basketball player Lamar in December 2013.

A source said of the incident: ''It was a really scary morning. She was totally freaked out, she had no idea how he found her.

''Not only was it a surprise to see him, but it truly was a scary interaction.

''She's such a strong woman, it's crazy to think about what she's gone through. But she was absolutely emotionally shaken from this.''

While Lamar, who was dumped after four years of marriage amid allegations he was addicted to drugs and cheating on her, insists he never ambushed Khloe, onlookers claimed he shouted at her, though the reality TV star initially attempted to ignore him, but screamed, ''Get off of me, get off of me. Stop. Stop,'' after the former LA Lakers star grabbed her arm.

Defending himself, Lamar told TMZ: ''Nobody got followed, nobody got hassled, nobody got harassed, nobody got grabbed on, none of that. I don't believe in following people around.

''I don't Twitter. I don't Instagram. Me and that girl fell in love. That's our business ... Do not disrespect my space, do not disrespect my character, because that's what y'all been doing. And from day one, even if half the things were true, even if half of them were true, people know who I am and y'all have discredited me, beat me down, took my confidence, took everything away from me.''