The birds and the bees aren't all that's buzzing down South.

The Southern Charm cast is rocked by a jaw-dropping secret baby rumor in the Bravo series' shocking season 12 trailer.

"There's an elephant in the room which we kind of need to address," Whitney Sudler-Smith ominously announces in the Oct. 5 first look. "The assumption is that one of you has a love child."

The revelation leaves many costars speechless before Madison LeCroy reacts with, "Is there a picture or not?!"

And it seems season 12 newbie Allie Newman might have proof as she replies, "I'll show you the baby."

Madison's response? "Wow, that's a beautiful baby."

While fans will have to tune in to find out which cast member is at the center of the baby rumor, they won't have to wait to see Shep Rose reunite with ex and series alum Taylor Ann Green.

The former Charmer makes a surprising cameo in the teaser as Shep reveals to Rodrigo Reyes, "I get a text and it says, 'This is Taylor Ann.'"

Cut to the exes sharing a hug as Taylor affectionately says, "Hi, stranger."

However, Shep's hopes of rekindling their failed romance has longtime BFF Craig Conover calling BS.

"I go, 'Shep, this is delusional,'" Craig recounts in the trailer. "'You just told me you might marry Taylor, but you said you want to f--k every girl.' I think he's a lost f--king soul."

But Shep and Taylor aren't the only costars causing drama with their love life antics as of late. After it's revealed that newbie Allie used to date Austen Kroll, Whitner Slagsvol makes his move on the Charleston-based model by asking her out.

But Allie and Whitner's budding romance crashes and burns as quickly as it begins.

"You pretend to be such a nice guy," Allie tells him during a tense argument, "but you will f--k somebody over that you made trust you."

Meanwhile, Austen and Molly O'Connell are seemingly going from pals to friends with benefits as Austen shares, "I went home with Molly last night."

Unfortunately for Molly, Salley Carson still has feelings for Austen after pursuing him hard last season to no avail.

When she tells Molley, "The fact that you went home with Austen is f--king crazy," she fires back with, "Ya'll are not dating!"

See everything to come—including a shocking fight between longtime besties Craig and Madison—in the trailer above.

Southern Charm returns Thursday, Nov. 12, at 9 p.m. on Bravo. In the meantime, keep reading to learn more about all the season 12 drama in store.

"Madison LeCroy is juggling it all as a mom of two and successful business owner with a husband who travels constantly," reads Bravo's season 12 logline, "a situation she finds more challenging than expected."

This season, Shep Rose is "caught between where he wants to be and where he’s been," according to the description. Not to mention, he's "forced to confront some harsh realities after the one that got away reemerges."

As Craig Conover "prepares to add author to his resume with his first children’s book," according to his bio, he "finds himself cautiously reentering a friendship with Austen, which threatens to derail some others."

Allie Newman, a Charleston-based model and former flame of Austen Kroll’s joins the group and "sparks a hot-and-cold flirtation with one of the guys."

Not only that, but, as Bravo teases, she "sets in motion a series of events that will uncover one of Charleston’s most scandalous and well-kept secrets.”

Austen Kroll and Salley Carson seem to be "happily friends with benefits, and his friendship with Craig is easy and carefree," his bio notes. "But when feelings change and hard truths are dropped, Austen is forced to reevaluate his closest relationships."

Salley Carson’s interest in Austen remains strong, according to Bravo, "but she’s trying to come to terms with the fact that it might not become something more. This realization puts strain on the rest of Salley’s friendships within the group."

For her part, Venita Aspen continues to navigate her friendship with Salley while pursuing a possible new romance with Whitner Slagsvol.

Molly O'Connell’s music career continues to take off. Plus, "after a surprising romantic turn," Bravo teased, "her status within the group is tested and her allies seem to be caught up in their own scandals."

This season, Whitner Slagsvol romances multiple women in the group, causing friction and plenty of drama.

Rodrigo Reyes "continues to be the glue that holds these friends together," according to his series bio, "but he’s quick to hold everyone accountable for their secrets and betrayals."

Charley Manley, meanwhile, has a new boyfriend to show off.