The more, the merrier? Bethenny Frankel grills Luann de Lesseps about the conditions of her relationship with new fiancé Tom D'Agostino Jr. in The Real Housewives of New York City's Wednesday, August 3, episode, as seen in Us Weekly's exclusive sneak peek.

The Bravo series' preview clip shows Frankel, 45, asking the Countess, 51 — who divorced Alexandre de Lesseps in 2009 — whether she and her current man are allowed to see other people.

"I mean, I know this is going to sound ridiculous because I know you had a different type of European relationship with Alex — are you guys monogamous?" Frankel asks.

"Of course, of course," a startled de Lesseps replies. "What do you mean 'monogamous'? We're getting married!"

De Lesseps tells the camera that she finds Frankel's uncertainty to be bothersome: "Why are you asking such bizarre questions? We just got engaged, and you're asking me if we're monogamous? Who asks that?"

"The way that Bethenny's asking me these questions is not sitting right with me," she continues. "It makes me think that Bethenny is up to something. She's not being mean, she's not being argumentative — she's just being coy."

The two women have had friction throughout the season, including during last week's episode, when Frankel threatened to "blow up" de Lesseps' engagement.

Check out the awkward clip in the video above. 

The Real Housewives of New York City airs on Bravo Wednesdays at 9 p.m. ET.

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!