Ramona Singer might be one of the most talkative cast members of the Real Housewives of New York, but when it comes to her husband Mario and his alleged cheating scandal, the reality television star is staying mum.

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

Rumor has it that the blonde beauty "shuts down" conversations about her husband's affair with her friends, leading to the speculation that she is "in denial" about the entire issue. Her husband Mario was caught cheating on her with his mistress Kasey Dexter during a trip to the Hamptons earlier this year.

"Ramona NEVER talks about Mario or the mistress, she absolutely shuts down cheating talk," a source close to her tells Radar Online. "Ramona refuses to acknowledge that there is a problem. She is burying her head in the sand and refuses to talk about what had happened."

Why Did Ramona Singer Send Kasey Dexter A Threatening Letter? 

Even with her marital issues, friends close to the Bravo star say that she refuses to allow anyone to help and instead puts on a "happy face" by covering up the strife between her and her husband.

"Everyone knows their marriage was broken but now she won't let anyone in to help as she tries to repair the relationship," the source added.

Ramona filed for divorce back in February but has since reconciled with her husband. The Real Housewives of New York airs every Sunday at 10:00 p.m. EST/PST on Bravo.