Porsha Williams and Sheree Whitfield Go At It Over an Apology in 'RHOA' Reunion Sneak Peek

Porsha and Sheree may have been friends throughout the entire season, but things take a turn in the sneak peek of the reunion.

The drama ignites when Andy Cohen -- an expert at stirring the pot -- brings up the girls' Barcelona trip, when Porsha warned Shamea Morton not to trust any of the women. "Do you think you owe her an apology for saying that Shamea can't trust her," he asks Porsha, who fires back, "You should ask her."

"Have I apologized for that?" Porsha asks Sheree, who responds, "Even if you apologize a month ago, two months ago, you're sitting here, justifying your actions."

"Girl, we are having a conversation about the situation," Porsha snaps back. "So I am going to talk about the situation."

But "Housewives" fans know the tables can turn on any of the ladies in an instant during these reunions, and that's exactly what happens when Sheree says, "I'm loyal to who's loyal to me."

"We get it," fellow Housewife Cynthia Bailey chimes in. "We know that you're loyal to Kim [Zolciak-Biermann.]"

Cynthia's shade gives Porsha the opportunity to deflect, asking her fellow Housewives why they haven't yet held Sheree accountable for what she knew about Kim Zolciak-Birmann's plan to distribute her daughter Brielle's bathroom bug video shot in Nene Leakes' house.

"Even though y'all did ask her then, what about now that y'all see that she knew about the video before we even got to Barcelona?" Porsha says, setting up the potential for all hell to break loose, as RoachGate was one of the most divisive topics of the season.

We can't wait to see how it all plays out when "The Real Housewives of Atlanta's" three-part reunion special begins Sunday, April 8 at 8 p.m. on Bravo.