In the Instagram post, Hollywood Unlocked founder Jason Lee claims that the rumors 27-year-old Tristan and 21-year-old Jordyn hooked up are true.
"One of my writers was there," Lee claims. "And Tristan you took everybody's phone but you let them stay. Jordyn came in, y'all were smoking hookah, she was all up in your lap, you was all over her, touchy feely, and you let the girl stay the night until seven in the morning. Now, that happened, that's a fact."
"And I don't want want to hear nobody trolling Khloe and talking about, 'It's a Kardashian curse, it's Khloe's fault, this and that,' no," he continued. "If a n**** ain't sh**, he ain't sh** ."
He later addressed Kylie.
"The fact that Kylie, your best friend was at the house doing all that, get her out now and get him out too," Lee concluded.
Khloe commented on the post on Tuesday with shouting emojis. Meanwhile, her best friend, Malika Haqq, also commented, writing, "STRONG FACTS."
Later, Khloe also liked a fan's tweet, which read, "Dont let anyone ever say this is your fault!. He is a sick man and if its true, then she is a terrible woman, both terrible people that do not deserve your love. TRUE does and ur doing great showing her that love."
Meanwhile, on Tuesday, Tristan tweeted "FAKE NEWS" shortly after reports broke of his and Khloe's breakup, then quickly deleted the tweet.
Khloe has yet to comment on her own social media accounts, though she recently posted a cryptic message on her Instagram Story, reading, "If your friendship has lasted longer than seven years, you are no longer friends. You are family."
Khloe and Tristan's split comes after more than two years of dating, and 10 months after Tristan made headlines when he reportedly cheated on her with multiple women while she was pregnant with their daughter, True. Khloe gave birth to True last April just days after the report broke, and the two eventually reconciled.
“There were trust issues again and she has been down that road before," our source says about their recent breakup. "She has to be strong for herself and True. Everyone is extremely disappointed.”
For more on Khloe and Tristan's relationship, watch the video below: