Was LuAnn de Lesseps Caught with Another Man?

People.com:

What is it with Housewives and vacations? A trip away from home seems to be license to misbehave – and the New York ladies are no different.

On an upcoming getaway to St. Barts (which airs Aug. 27) the clothes come off, along with the niceties. Bravo will air a sneak peek of all the drama after tonight's Real Housewives of New York City episode – but PEOPLE.com has an exclusive first look. (Watch the clip below.)

Let's get to the juicy stuff right away, shall we?

A source close to the show tells PEOPLE that after having dinner and drinks out with the ladies, where they were joined by dark-haired French guy (who is quite the Johnny Depp lookalike!), some began to suspect that Countess LuAnn de Lesseps – who already has a Frenchman of her own, longtime boyfriend Jacques – may have, well, been too friendly with their dinner guest.

In the clip, we see Heather sitting by the pool the next day claiming to have seen LuAnn with a man in the house. And, later, Ramona Singer even tells the same dark-haired guy, "I saw you here [at the house]. … OK, kiss and don't tell."

"LuAnn stayed out the latest of all the ladies," the source tells PEOPLE of the night's activities. Meanwhile, the source says, LuAnn explains herself after the rumors by telling her costars that she brought back a group of Italian friends that night to hang out at their house.

Says the source: "You find out who she really brought home the next day through a nervous phone call."

And, in fact, in the clip, we see a taste of that phone call, in which she's subtitled because she's speaking French. Says LuAnn: "He can't say he was here last night with me."

So, did the cameras catch the Countess cheating? We'll have to watch and see. 

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