Khloe Kardashian is reportedly "happy" to be dating a private equity investor - despite claiming she's single.
The mum-of-one, 38, is said to have been introduced to the mystery man by her sister Kim, according to US media reports.
Now, a source claims the Good American founder is moving on from her baby daddy Tristan Thompson after he was accused of fathering another child when the couple were together.
"Khloe has moved on and is happy in her new relationship, which is still in its early stages," the source said.
"Tristan would want nothing more than to be back with Khloe, so of course, there’s jealousy there."
The source added that the NBA player "tried countless times to win back" Khloe, who is "done with him for good romantically," reports US Weekly.
Tristan and Khloe are believed to be 'amicably' co-parenting their daughter True, three.
The basketball player is said to be single, but still has a penchant to "party and flirty with girls, which is nothing new," the source added.
Rumours of Khloe's new relationship came after she denied on a celebrity gossip Instagram page that she was seeing another NBA player.
The Kardashians star stated at the weekend: "Definitely NOT True !!! I love you! Thank you for the nice wishes but I am not seeing a soul. I am happy focusing on my daughter and myself for awhile."
However, a source told PEOPLE that Khloe's new "relationship is in its early stages" after she met the mystery man at a dinner party a few weeks ago.
The reality regular has had a tough time romantically after Tristan's high profile antics.
This Chicago Bulls player issued a public apology to his now ex, after a paternity test proved that he was the father of Maralee Nichols' son Theo, who was born at the end of last year.
Taking to his Instagram Stories on January 3, he wrote: "Khloe, you don't deserve this.
"You don't deserve the heartache and humiliation I have caused you. You don't deserve the way I have treated you over the years.
"My actions certainly have not lined up with the way I view you. I have the utmost respect and love for you. Regardless of what you may think.
"Again, I am so incredibly sorry."
Khloe forgave Tristan and tried to 'do the right thing for their family' however she then told Kim in The Kardashians, she was "done".
"I will push through anything and everything just like I have in the past. I'm not someone who sits in my sorrow and makes that the rest of my life," she said tearfully.
"One day, I will have the fairy tale that I hope to have."
The Mirror has contacted Khloe and Tristan's reps for comment.