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It's the moment fans have been waiting all season for...and it doesn't disappoint.

At the end of last week's episode of The Real Housewives of New York City, Bethenny Frankel finally showed Luann de Lesseps the receipt she'd been keeping in her pocket. And by receipt in her pocket, we mean the photo on her phone of Luann's fiancé Tom D'Agostino Jr., cheating on her with a woman in a NYC hotel. 

And in a sneak peek from Wednesday's finale of the Bravo hit, a devastated Luann calls Tom and confronts him over the photos. "How could you do this to me, in the Regency in front of everybody?" Luann asks him over the phone. "What do you mean you don'y remember? You were that drunk?!"

Uncool, Tom. Uncool. 

Luann de Lesseps, Tom D'Agostino Jr.

Steve Mack/FilmMagic

Since the episode aired last week, Bethenny has received flack from some fans for choosing to tell Luann about Tom's indiscretion on-camera. But the Skinnygirl mogul stands by her actions, simply responding to a Twiter follower, "Just one answer: i am on a reality show." (Brutally honest, but true, no?)

Of course, as any true RHONY fan knows, Luann is still set to marry Tom in a ceremony on New Year's Eve, so it'll be interesting to see what happens after the intense phone call featured in the sneak peek above. And so far, it seems that Dorinda Medley is the only co-star currently invited to the wedding, along with former Real Housewives of New York City star Jill Zarin and Real Housewives of Miami alumna Marysol Patton.

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

(E! and Bravo are both part of the NBCUniversal family.)