Thursday’s filming of the Vanderpump Rules Season 10 reunion started with a bang and almost resulted in a brawl. 

According to TMZ, Scandoval culprits Tom Sandoval and Raquel Leviss were put through the wringer by their cast mates for carrying on a months-long affair behind Ariana Madix’s back, with things exploding within the first 2 minutes that cameras began rolling. 

Throughout the 5-hour reunion, Sandoval and Raquel reportedly had no one in their corner and even faced backlash from host Andy Cohen and ‘VPR’ matriarch Lisa Vanderpump. 

“It was like a nuclear bomb went off in the studio,” a source described the reunion stage.

While Andy took part in grilling Sandoval and Raquel for their actions, he also had to step in at one point to separate 2 cast members who nearly came to blows. The identity of the (almost) dueling duo has not been revealed, though TMZ reports the instigator was not Sandoval, Raquel or Ariana, and “is not someone you’d guess.” 

At one point in the reunion, Sandoval and Raquel were asked how their affair started, and though they didn’t provide a timeline for the Scandoval, they said they were hooking up for a period of time before deciding to pursue something more. 

The two were also asked if they were still together, to which they allegedly confirmed that they are.

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“That relationship is like on an egg timer,” a source close to production told TMZ. “It’s not gonna last.” 

As for Ariana’s demeanor while filming, a source told the outlet Ariana was infuriated with Sandoval and Raquel equally, though she didn’t “go over the top.”

While Ariana did cry at times during the reunion, the source said the manner in which she spoke and what she was saying suggested “she’s had some serious therapy.” 

RELATED STORY: Seating Charts, Sound Baths & One Massive Stack of Cards: How the Cast & Producers of ‘Vanderpump Rules’ Prepared for the Season 10 Reunion 

(Photos: Bravo; Instagram)