‘The Real Housewives of New York City’: Dorinda Warns Tinsley to Not Trust Sonja (Exclusive)

Dorinda Medley on 'The Real Housewives of New York City.'

The gal pals sit down for a post-Halloween party chat, where Dorinda Medley confesses to Tinsley Mortimer that Sonja Morgan has been speaking negatively about her to their friends.

Beware of Lady Morgan.

That’s the message Dorinda Medley shares with Tinsley Mortimer in ET’s exclusive sneak peek at this week’s The Real Housewives of New York City. The gal pals sit down for lunch and, naturally, a drink after Dorinda’s pretty wild Halloween party. Or as Dorinda describes it, “Where Sonja [Morgan] told everybody I was fat.”

“What is wrong with her?!” Tinsley asks after Dorinda shares that tidbit of information.

“You know, there’s this old saying: Never make a mistake twice. Do it three or four times, so you really get it wrong,” Dorinda says, seemingly calling trusting Sonja “a mistake.”

“Here’s the thing, I’m a forgiver,” she adds. “I just want to keep it moving, I’m fine. So, I see her the other day, expecting to start fresh. So, I went in there unprepared, which this is what I’m going to tell you about this weekend: Be prepared.”

Check out Dorinda and Tinsley’s full chat here:

“What happened?” Tinsley asks. “Did she talk about me?”

“She talked about you horribly,” Dorinda shares. “‘She didn’t buy that gift card. She doesn’t buy anything,’” referencing a gift Tinsley gave to Sonja at the end of the last season, thanking Sonja for letting Tinsley stay with her.

“‘You know, Tinsley came to New York for one thing: to get a man to pay for everything,’” Dorinda continues, imitating Sonja. “‘He pays for her rent…’”

A visibly annoyed Tinsley cuts Dorinda off, but not before Dorinda can sum up what Sonja has allegedly been saying behind Tinsley’s back: “[She’s] insinuating you’re, like, a kept woman.”

Then, in a confessional, Tinsley says she’s “appalled,” but you’ll have to tune into The Real Housewives of New York City at 9 p.m. ET on Wednesday on Bravo to see what happens next. For more on the show, check out the video and links below.