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Ramona Singer, Patti Stanger

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Shots have officially been fired, folks! 

Last month, Millionaire Matchmaker star Patti Stanger appeared on Watch What Happens Live, where she alleged that she once saw Ramona Singer's estranged husband, Mario Singer, cheat on the Real Housewives of New York star (the pair is currently going through a divorce after more than 20 years of marriage). 

"I was there that night he cheated," the 46-year-old Bravolebrity told host Andy Cohen"I saw him pick the girl." 

As expected, Stanger's claims didn't go over too well with Singer, who was asked about the allegations when she stopped by the clubhouse last night, following the RHONY season-seven premiere. 

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"I know what she said," Singer stated, throwing up her hand in the air while interrupting the viewer who asked for her response to Stanger's comments. "And none of it's true." 

"I almost wanted to call her," the 58-year-old reality star continued. "And say like, 'What the heck are you saying?' But I thought, you know what, I'm not doing that. I think she's a little bit like Jill [Zarin]. She likes to be relevant in the press by using other people." 

Ouch. 

And apparently, Stanger quickly caught wind of the interview as she immediately took to Twitter last night to slam the New York Housewife's remarks. 

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Patti Stanger

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"Ha ha @ramonasinger @BravoWWHL I was there and I don't need you to be relevant. @Andy," the Bravo star began in a series of tweets. "I am not a liar tweeties and have never ever been one. I was at hamptons party with @JillZarin and saw Mario cheat. True dat!" 

She added: "FYI tons of other people at the party saw it too @ramonasinger put down the #pinotgrigio n come clean? @JillZarin." 

While Ramona has yet to respond to Stanger's tweets, former Real Housewives of New York star Jill Zarin weighed in on the controversy via her own social media page. 

"So true. So jealous of you Patti and very sad. You wonder why he doesn't want her anymore?" she wrote

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Ramona Singer, Mario Singer

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Ramona and Mario separated, and the reality star reportedly filed for divorce, in January 2014 amid allegations of Mario's infidelity. Seven months later, Singer, who is mom to daughter Avery with Mario, announced via Twitter that she was leaving her husband. 

"I have decided to move on with my life without Mario. I tried my best to make my marriage work," she wrote. "I am excited for the new chapter in my life." 

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