Things are about to go from bad to worse for Ramona Singer. Just days after the reality star's husband, Mario, was accused of having an affair, longtime rival and former co-star Jill Zarin reveals to In Touch a shocking new revelation: Mario hit on her!

“When we were taping the show, Mario hit on me,” Jill exclusively tells In Touch. “It made me uncomfortable to the point where I had to tell [my husband] Bobby to tell Mario to leave me alone.”

Despite the fact that he remains a doting husband on-screen, Jill claims Mario had a wandering eye when the cameras stopped rolling. “He was always looking around,” she says. “People would talk about it, but nobody would ever say anything because they didn’t want to hurt Ramona. They felt bad for her.”

However, Ramona didn’t look like a woman scorned when she hit the red carpet in a sexy black cocktail dress at a gala in NYC on Oct. 15. Just five days earlier, reports had surfaced alleging that Mario had been unfaithful with a twentysomething blond socialite, which Ramona denied.

“Ramona and I lived through an incredible experience together, so of course I will support her any way I can,” says Jill. “Mario flirted with me as I saw him flirt with many other girls. The best thing for her to do is to stand tall and move on.”

For more, pick up the latest issue of In Touch, on newsstands now.

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