Ramona Singer's estranged husband, Mario Singer, has reportedly turned his mistress into his girlfriend.

Ramona Singer Doesn't Blame Kasey Dexter For Her Divorce

According to a new report, Mario and Kasey Dexter, who recently attended an event together in New York City, are officially a couple, and Dexter has been gushing over their romance to friends.

“She says they’re in love,” an insider told Radar Online on Monday. “It’s definitely back on.”

Was ‘RHONY’ Star Romano Singer’s Book Release Just Spoiled By Her Husband’s Mistress?

In addition to her comments to friends, Dexter is accused of rubbing her relationship with Mario in the face of the Real Housewives of New York City star. Last week, while attending the NYC bash, Dexter and Mario posed for a number of photos, a while Ramona was not present during the bash, her co-stars, including close friend Sonja Morgan, were in attendance.

Mario's romance with Dexter was first reported in 2013, but it wasn't until 2014 that Ramona caught the pair at her Hamptons home. However, at that point, despite filing for divorce, Ramona wasn't ready to end her marriage to Mario, and for months, they attempted to get their relationship back on track.

Then, in the summer of 2014, Mario was caught with Dexter once again, and Ramona called it quits with Mario for good. Weeks later, he went public with Dexter in the Big Apple.

For more details on Ramona Singer's husband's affair, check out the video below.

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Ramona singer, Kasey Dexter, Mario singer, Bravo, Reality TV, The Real Housewives of New York City