"Never go after my husband!" screams Rinna when Richards threatens to reveal a secret about Harry Hamlin

By Wade Rouse
Updated March 04, 2015 07:45 AM

The Real Housewives of Beverly Hills‘ trip to Amsterdam was anything but a relaxing escape – and things went south the moment they arrived.

“If you poke a hornet’s nest, you are going to get stung,” Lisa Rinna exclusively told PEOPLE on Monday about her fight with Kim Richards, who threatened to reveal a secret about Rinna’s husband, Harry Hamlin, on Tuesday.

And Rinna wasn’t lying: Although no insects were flying, glasses were – at the very first dinner the wives had in the homeland of Yolanda Foster (who met a former boyfriend she didn’t remember kissing in one of the night’s few light moments).

“I’m sorry if I’ve ever gotten into your business,” Rinna told Richards at dinner, tearing up after telling the wives about her sister who overdosed at 21.

“You have,” an angry Richards immediately said. “I have been sober for three years, and my friends and family have never seen me like that.”

The two have been on edge with one another since Rinna publicly expressed concern about Richards’s sobriety, first at a poker party when Rinna called her behavior whackadoodle and then on the plane ride to Amsterdam.

Continued Richards: “You have gone around to everyone and talked … asking where I’ve gone to treatment, if I had a sponsor … you want to bring up my stuff, let’s talk about your home life.”

When Eileen Davidson attempted to intervene, Richards told her to shut up, saying she hated the soap star’s “hair, face, attitude.”

“I don’t know where this hatred is coming from … it’s evil,” said Davidson.

Richards then unleashed on Rinna: “Why don’t you have a piece of bread and maybe you’ll calm down a little,” before saying, “Let’s talk about the husband.”

“Don’t ever touch my husband,” said Rinna, who recently told the wives Hamlin had been sober for three years and that both of his brothers had died from alcoholism.

“You better watch what you talk about me, or everyone will know,” threatened Richards, prompting a furious Rinna to pick up a glass and toss water on Richards before throwing the glass at her, which shattered everywhere and caused Richards’s sister, Kyle, to run out of the restaurant.

“Never go after my husband!” screamed Rinna, leaving the restaurant.

“Everyone will know!” Richards yelled. “She can’t lie about me, or I’ll tell something that is true.”

Richards later approached Rinna, saying she had seen her “at my ugliest” and that alcohol had ruled her life.

“I would have respected you more if you had come to me,” said Richards, stating she didn’t want her children to be hurt by rumors. “Sobriety is the most important thing in my life.”

“I’ve come at this with only good intentions,” said Rinna. “You really pissed me off, [but] I believe we can move forward.”

The Real Housewives of Beverly Hills airs Tuesday (9 p.m. ET) on Bravo.