Luann de Lesseps' Fiancé Tom Hits On Ramona Singer Right In Front Of Her!

Luann de Lesseps has ignored her co-stars' warnings about her fiancé, but could their suspicions be right? In a Real Housewives of New York sneak peek, Tom D'Agostino hit on former flame Ramona Singer in front of his fiancée!

"That was the cutest thing I've ever heard a man tell a woman," Carole Radziwill told Singer while on a yacht to celebrate the engagement. "I was like, 'Did he just say she smelled like grapefruit? Or did I have too many mimosas?'"

Singer replied, "He likes my fragrance of citrus!"

While the women laughed over the compliment, Radziwill revealed her concerns in her confessional.

"I don't think he should be telling Ramona she smells like grapefruit," she said. "If he wants to tell anyone that she smells like a grapefruit, it should be Luann."

The clip comes after Bethenny Frankel revealed she has "incriminating" texts that could end the engagement on last week's episode.

RadarOnline.com exclusively revealed her bombshell is allegedly a video of D'Agostino cheating on The Countess!

"Bethenny told everyone that she got a video of Tom kissing another woman behind LuAnn's back," a source told Radar.

In an exclusive interview with Radar, D'Agostino admitted to having "one misunderstanding" that led to actions he "deeply regrets."

The red flags began popping up when Singer and Sonja Morgan both revealed his past as a serial dater. They even claimed he lied to de Lesseps about how many times he went on dates with them.