Their hook-up initially caused drama in the house when the group vacationed together for the first time back in Murrells Inlet, but now, things may be heating up again in Biloxi for Mattie and Lyle on Party Down South.

Daddy & Tiffany Go At It

The two have managed to remain good friends since their dramatic hook-up, but it appears sparks might be flying for them once more now, and another hook-up could be in the works-and they're not the only ones who have noticed.

"Mattie and Lyle have some kind of vibe goin' on," Tiffany notes in a preview clip for the March 26 episode.

Daddy & Hott Dogg Hook-Up

And sure enough, at least on Kyle's end, he is definitely attracted to Mattie again-specifically, her backside.

"D-n. It's like a fried cheese hush puppy," he says in the clip.

And despite the history, it appears the roommates are cool with the two hooking up again-because they're more focused on what may be a train wreck coming through thanks to Hott Dogg's assumed hook-up with Daddy-especially after it appears something happens that puts an end to any possible romance between the two.

Now, the other roommates, specifically, Murray, who wanted a drama-free vacation this time around, will confront her over what happened.

"This is the bulls-t that we had to deal with last summer," he says to her in the clip.

"I didn't f-g come here to make it all f-g complicated," she replies.

"Then leave him alone," Murray replies.

Party Down South airs Thursdays at 9 p.m. on CMT.