It looks like Ramona Singer's decision to finally pull the plug on her marriage to her husband Mario wasn't an easy one, but it had to have been done. The Real Housewives of New York star was apparently "fed up" with his cheating ways and kicked him out for good once she found out he was sleeping with his alleged mistress once again.

Ramona Singer's Husband Still Cheating On Her With His Mistress?   

Ramona's sister Sonya Mazur recently opened up about her heartache and how she thought Ramona and Mario had the "perfect marriage."

Mazur told Radar Online on Friday, "I never thought Mario would do something like this to my sister. I can't believe this happened, period."

Why Did Ramona Singer Send Kasey Dexter A Threatening Letter?  

She added, "I'm shocked to hear she's going to leave. I think it's unbelievable. I thought they were the perfect couple."

Just recently, Ramona kicked out her husband from their home after learning that he is still in contact with Dexter and has even been seeing her behind Ramona's back.

A source told In Touch Weekly on Wednesday, "She threw Mario out in late July because she discovered he was back with his mistress."

According to the magazine, Mario and the blonde socialite were seen strolling hand in hand and kissing in Montauk on Long Island. The following week, they were snapped in a photo having brunch at New York City's Anassa Taverna on Aug. 2.

Ramona and Mario have been married for over two decades.

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