And while her momager Kris Jenner insists Khloe's doing "really great" post-split, the Keeping Up With the Kardashians' star paints a very different story herself via Twitter today.
"This, in and of itself, is heart breaking and torture to my soul," she Tweeted of her split, before seemingly alluding to the rebound reports. "Please, I don't need the extra rumors and BS right now."
Although she's definitely been spending time with Matt, who once dated Rihanna, a source claims there's nothing romantic happening between the two of them or anyone else for that matter.
"They are just friends and have been for a long time," a source told People of the pair. "Khloe is absolutely heartbroken right now [over Lamar] and dating someone is the last thing she's thing about."
The 29-year-old filed for divorce for her NBA husband of more than 4 years last Friday, citing irreconcilable differences.