It looks like it wasn't meant to be after all. Ramona Singer has finally pulled the plug on her marriage to her husband Mario Singer after giving it one last try. The reality television star has been dealing with her husband's infidelity after he allegedly cheated on her with Hamptons socialite Kasey Dexter earlier this year.

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

It looks like Ramona, though, isn't giving her soon-to-be ex-husband any more second chances as she made the big announcement on her Twitter account on Thursday afternoon.

"I have decided to move on with my life without Mario. I tried my best to make my marriage work," the Real Housewives of New York City star wrote. "I am excited for the new chapter in my life."

Why Did Ramona Singer Send Kasey Dexter A Threatening Letter?   

Just recently, Ramona kicked out her husband from their home after learning that he is still on 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.

Tags: Real Housewives of Orange County Reality TV Bravo