'RHONY' Bad Apple of the Week: Luann Fumes After Finding Out Ramona Asked for Invite to Tom's New Year's Eve Party
9 Biggest 'Housewives' Blowouts

"What is Luann so upset about? She started dating Tom behind my back," Ramona says on Wednesday's cringe-worthy episode.

Ramona Singer has never heard of girl code.

On Wednesday's "Real Housewives of New York," Luann de Lesseps returned from rehab and confided in Dorinda Medley that she had "heard through the grapevine" that Ramona called Luann's ex-husband, Tom D'Agostino, over the holidays to try to score an invite to his New Year's Eve party on the very yacht he and Luann had their rehearsal dinner.

"How low is that?!" Luann said. "What's wrong with her? It's mind blowing that she would even consider something like that -- and call herself my friend."

Dorinda's eyes bugged out of her head as she told Luann she, too, had heard the story.

"What kind of asshole woman would want to go to Tom's New Year's Eve party?" Dorinda asked. "That's what you call a real slob-kabob."

The ladies of New York later convened for a spa weekend getaway Dorinda set up in honor of Luann's return. During casual conversation, Sonja Morgan told Luann she had received an invite to Tom's party.

"I didn't say a word to you 'cause I didn't want to upset you," Sonja said.

"I thought it was disgusting," Dorinda added.

"I can't believe he invited you to that," Luann replied. Sonja shrugged and said, "We're friends, but still. I'm there for you, and he knows that."

The topic of Ramona trying to score an invite came up, which Sonja and Dorinda both attributed to Ramona just being Ramona.

"For her, it's a party," Dorinda said. Sonja added, "She won't miss the opening of an envelope!"

Luann proceeded to get angrier and angrier about the situation, which Dorinda tried to diffuse by suggesting Lu simply ask Ramona if it was true.

"It's shocking even for Ramona, but 100 percent I believe that Ramona tried to get invited to Tom's party," Luann said. "100 percent."

Once the rest of the women arrived, they did their hellos and proceeded to pester Luann with questions about her arrest and stint in jail.

After all retreating to their separate quarters to get ready for dinner, Ramona found her way into Luann's room. Ramona went on and on about how happy she was to see Luann, saying, "Life really, to me, is about our girlfriends. It's about the friendship. This is what's gonna sustain us. This is what's gonna nurture us. We, as women, our friendships and our love for each other sustains us." Yada, yada, yada.

Luann refrained from popping off on Ramona -- only to bring it up in front of everyone at dinner.

"That's bad. That's worse than bad," Bethenny Frankel said, looking right at Ramona. "You were in Palm Beach for New Year's Eve?"

Ramona insisted she did nothing wrong and that it was the friend she was staying with who "really wanted to go." Ramona said she then texted Tom, who replied, "I'm over my limit." LOL.

"How would you feel if you were me, Ramona?" Luann asked, to which Ramona replied, "You know what, Luann? I told you not to be with him. I wasn't even invited to the wedding, so let's call a spade a spade." Yup, she said that.

"What is Luann so upset about?" Ramona later told Bravo cams. "She started dating Tom behind my back. She knew I was dating him and never shared that fact." Ooooof.

"The Real Housewives of New York" airs Wednesdays at 9 p.m. on Bravo.

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