Mario Singer Mistress: Ramona Singer's Husband Photographed With Kasey Dexter

Mario Singer was recently spotted with his mistress.

Months after reconciling with his wife, The Real Housewives of New York City star Ramona Singer, Mario reunited with his mistress, socialite Kasey Dexter, and according to a new report, Ramona kicked him to the curb for doing so.

“She threw Mario out in late July because she discovered he was back with his mistress,” a source revealed to In Touch Weekly on Aug. 6.

News of Mario's affair with Kasey first surfaced in late 2013, but continued on for months before it was reported that Ramona had caught the pair at the Hamptons home they shared. Following the news of an alleged confrontation, Ramona filed for divorce, but just weeks later, she and Mario were seen spending time with one another and the divorce appeared to be off.

Now, it's hard to tell what will happen next. However, if Mario's behavior is any sign of what's to come, there could be a divorce in their future. After all, he doesn't seem to be concerned with his marriage. Instead, he's spending tons of time with Kasey -- and not hiding it.

On July 27, Mario was seen walking hand-in-hand with Kasey and kissing her in Montauk on Long Island. Then, on Aug. 2, the couple enjoyed brunch at NYC’s Anassa Taverna.

Also on Aug. 2, Ramona surfaced on Facebook, changing her profile photo from one that featured herself, Mario and their daughter, to one of herself and Avery.

 “Once again,” the source explained, “Mario made a fool out of Ramona.”