Sources familiar with the situation tell RadarOnline.com, there's nothing more than friendship going on between the two.
Insiders say the Very Cavallari star "has never been interested" in anything romantic with Austen.
"There is nothing and never has been anything between them," one source told us, "and def never kissed."
When asked about the duo reportedly sharing a passionate smooch in Charleston, South Carolina over the weekend, one person familiar with the situation laughed and responded, "I don't know where that came from."
Fans went wild when still married Cavallari took to social media just days ago, teasing that she was back in the Palmetto State with the Southern Charm crew.
Back in December, rumors swirled that she and Austen might be more than friends following her split from husband Jay Cutler and Kroll's breakup with co-star Madison LeCroy.
Over the weekend, Cavallari was back in town and posing alongside Austen.
The duo was seen smiling with their arms wrapped around each other while taking a second to snap a quick shot with Austen's Southern Charm star Craig Conover outside Leon's Oyster Shop on Sunday.
Fast-forward to Monday and blogs everywhere are writing about a so-called make out session that allegedly occurred between the two.
But our sources say the rumor is completely false. The single reality stars are nothing more than "friends," nor have they ever shared a kiss.
Meanwhile, Cavallari and her soon-to-be ex-husband are still battling out their divorce.
According to reports, the 38-year-old retired quarterback is coming for his estranged wife's jewelry and apparel line, Uncommon James.