Brandi Glanville has revealed the intimate details of her alleged affair with Denise Richards, which will be explored later this season on “The Real Housewives of Beverly Hills.”

In a new preview, former “Housewives” star Glanville, 47, claimed Richards, 49, and husband Aaron Phypers “have this whole open thing,” and that Richards wanted to keep her alleged tryst with Glanville hidden.

“I f–ked her, woke up the next morning [and] she said, ‘Aaron can never know this. He’ll kill me,” Glanville said during a sit-down dinner with current “Housewives” including Kyle Richards, Erika Girardi, Lisa Rinna and Dorit Kemsley.

As the preview continued, a teary-eyed Richards — who wed Phypers in 2018 — stated, “What the f–k? That’s not true.” It’s unclear whether she was at the dinner too.

Earlier this year, Richards denied rumors of an open marriage amid rumors about her and Glanville. Page Six was previously told Richards stopped filming the Bravo series after being confronted by her co-stars over the allegations.

Kemsley, 43, later said on camera that she “believes Denise.”

The footage also featured “Beverly Hills” newbie Garcelle Beauvais revealing how she tried to get a hold of Richards to no avail.

“I was supposed to meet up with Denise and she’s a no show,” Beauvais, 53, said. “I’ve been calling her.”

Richards is seen in the teaser shortly after, sitting at a table with her cast mates saying, “Please, do not air this. It’s very bad.”

The mother of three, who joined the “Real Housewives” franchise last year, then added, “Bravo has a choice. If they ever want me to be on this show … they need to cut that.”

In the clip’s final moments, Richards and Rinna, 56, are seated across the table from one another having a discussion.

“I think it’s a lesson learned,” Rinna said, to which Richards replied, “Oh, I learned a lesson.”

Reps for Glanville and Richards did not immediately return Page Six’s request for comment.

The “Real Housewives of Beverly Hills” airs Wednesday on Bravo at 9 p.m.