They've all just gotten to Savannah for their last vacation together, but the truth about how his fiancee back home has been acting behind his back will put a big damper on Lyle's trip on Party Down South.

Mattie Opens Up About Lyle's Drama With Santana

Lauren and Tiff have come clean with what they know and what they've heard when they've been back home--which included rumors that Santana cheated on Lyle just one week before he proposed to her in Florida, and now, the story is starting to cause some major drama.

"I've been keeping a secret for a long time. I wasn't going to say anything but now, I have no choice," Lauren says in a preview clip for the Feb. 4 episode.

Are Lyle & Santana Still Together?

Sure enough, Lauren will tell Lyle everything she knows about what supposedly went down between Santana and Brandon--the guy Lyle is concerned about getting far too close to his woman.

"There's a reason she changed Brandon's number in her phone," she says .

And of course, the news will devastate Lyle, who thought he had found the woman of his dreams.

"I don't want to believe it. It hurts," he cried in the clip. "I can't believe this is going on."

However, things are going to continue getting more complicated, as Tiffany will morph into her Mama Bear mode that she tends to exhibit with her roomies and will call Santana to give her a piece of her mind, even though Boudreaux asks her not to.

"Boudreaux be stupid to marry you, you stupid [BLEEPED OUT]," she says.

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

Hurt Lyle Boudreaux, and you gotta answer to the family!!! #FriendsDay #NewEpisodeTonight

Posted by Party Down South on Thursday, February 4, 2016

Tags
Party Down South, CMT, Reality TV