Tom Sandoval and Lala Kent attend the “Vanderpump Rules” Party For LALA Beauty Hosted By Lala Kent at Beauty & Essex on June 30, 2021 in Los Angeles, California.Photo:Amy Sussman/Getty

Tom Sandoval and Lala

Amy Sussman/Getty

A kiss from a decade ago came back to hauntTom SchwartzandScheana Shay.

On Tuesday’s episode ofVanderpump Rules, theSchwartz & Sandy’sco-owner, 41, made a shocking confession toLala Kent, saying, “I was a makeout slut. [I] made out with Scheana like 12 years ago in Vegas.”

When Lala, 33, asked when the makeout happened, he revealed that it was during “a rocky moment” when he was datingnow-ex-wifeKatie Maloney, who still didn’t know about the Vegas encounter.

From left: Katie Maloney, Tom Schwartz and Scheana Shay.Charles Sykes/Bravo/Getty; Frazer Harrison/Getty; Steve Granitz/FilmMagic

WATCH WHAT HAPPENS LIVE WITH ANDY COHEN – Episode 20031 – Pictured: Katie Maloney – (Photo by: Charles Sykes/Bravo via Getty Images); SANTA MONICA, CALIFORNIA - NOVEMBER 10: Tom Schwartz attends the 2019 E! People’s Choice Awards at Barker Hangar on November 10, 2019 in Santa Monica, California. (Photo by Frazer Harrison/Getty Images); LOS ANGELES, CALIFORNIA - NOVEMBER 16: Scheana Shay arrives at the Los Angeles Premiere Of Prime Video’s “The People We Hate At The Wedding” at Regency Village Theatre on November 16, 2022 in Los Angeles, California. (Photo by Steve Granitz/FilmMagic)

Lala then took it upon herself to be the bearer of the bad news. After she revealed Schwartz’s secret, his shocked ex-wife said, “What the actual f—? Are you kidding me? I just have so many questions like when was this and where exactly was this and was this the time that Schwartz said he went to Vegas and made out with one of Scheana’s friends and was it actually, in fact, Scheana.”

The Give Them Lala Beauty founder admitted it was a strategic choice to discuss it with Katie before Scheana, saying, “I went back and forth [on] whether I should talk to Scheana first or Katie first and I decided that I needed to talk to Katie first. I don’t want to give Scheana time to figure out a way to make this a pretty picture.”

However, Katie, 37, didn’t mince words when she confronted Scheana, 38, about going behind her back with her then-boyfriend. Scheana then shared her side of the story and recalled that Schwartz was the one to initiate a kiss but “it was not a makeout.”

“Can I tell you who I was making out with on that trip? Ariana,” she added.

Scheana Shay (left) and Katie Maloney.River Callaway/Variety via Getty, River Callaway/Variety via Getty

Scheana Shay, Katie Maloney

River Callaway/Variety via Getty, River Callaway/Variety via Getty

Scheana further detailed her decision to keep the kiss a secret for a decade, telling the cameras, “I wanted to pretend like this never happened. I never told [ex-husband Mike] Shay. I never told my mom. I never told my best friends. I mean, also I would never have told Katie especially back then because the bitch is scary… There’s no way in hell, I was going to be like, ‘By the way, your man wanted me in Vegas and he kissed me.’ Like, no, never.”

She finally told Scheana, “I wish I would have known.”

TheSomething About Herco-owner later went to Schwartz and told them she felt hurt that she was kept “in the dark” about his kiss with Scheana.

Tom Schwartz and Katie Maloney-Schwartz attend the Los Angeles special screening of Lionsgate’s “Midnight in the Switchgrass” at Regal LA Live on July 19, 2021 in Los Angeles, California.Kevin Winter/Getty

Tom Schwartz and Katie Maloney-Schwartz attend the Los Angeles special screening of Lionsgate’s “Midnight in the Switchgrass” at Regal LA Live on July 19, 2021

Kevin Winter/Getty

Elsewhere on Tuesday’s episode,Tom Sandovalattempted to mend fences with Lala, explaining, “Lala and I, I don’t know if you’ve really ever been that close, in a way it seems less about reconnecting and more about actually building something new.”

During a conversation after his breath work session — which he called an “emotional organism” — the pair discussed his headline-making affair withRachel “Raquel” Leviss, which endedhis nine-year relationshipwithAriana Madix.

“Whatever went on with you and Ariana and whatever decisions that you made, do I approve of them? No. Do I understand them? No,” Lala told Sandoval.

She admitted that Scandoval was “a trigger” for her followingthe demise of her own relationshipwithRandall Emmettbut admitted that she is working on herself, adding, “I’m trying to trust again. And I don’t want you paying for my experience with someone else.”

Tom Sandoval and Lala Kent.FOX via Getty; Mindy Small/Getty

Tom Sandoval and Lala Kent

FOX via Getty; Mindy Small/Getty

Sandoval then reflected on his own life experiences.

“The way things have worked out in my life, I do feel like this was supposed to happen,” he said, seemingly referring to Scandoval. “And maybe like what you went through obviously was maybe was supposed to happen.”

“I’ve been held prisoner to my experience for way too long,” she responded. “You and what you did, that is not my fight. I now have to go into this is what I want. This is what I feel good about. And I did feel good about coming here and having this conversation with you and letting you know that this is good for me.”

He added, “[I] appreciate your vulnerability. I would like to become better friends with you and invest in that.”

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories.

Vanderpump Rulesairs Tuesday at 8 p.m. ET on Bravo.

source: people.com