This is painful to watch!

Bethenny Frankel was tasked with the difficult job of telling Real Housewives of New York co-star LuAnn De Lesseps that her fiancé was cheating on her during Wednesday's episode, and watching The Countess react to the news was heartbreaking.

"Something was dumped on my lap, and I don't want this to be happening right now. I have to show you something and I have to tell you something, I don't want to be the one to have to tell you this. It's true… and it was Wednesday night," the Skinnygirl mogul admitted while armed with pictures of Tom Agostino Jr. "making out" with another woman at an NYC bar.

De Lesseps was so caught off guard by the revelation that she ran out of the room and begged crew to stop filming as she processed the betrayal. The multimillionaire cocktail founder doesn't regret what she did, though.

“It wasn't like this person was in a back alley doing a drug deal. [Tom was] in the Regency Hotel Midtown on their popular night, making out at the bar for two hours the night before [LuAnn’s] engagement party a week and a half after her engagement. That's the story, and I don't know what else to say. To each their own," she told Us Weekly at the launch party for her Watermelon Lime Skinnygirl Margarita.

"I suck at relationships. I'm not giving her any advice. I'm saying these are the facts, and the question remains, 'Would you want to know?'... I do have the receipts to prove it. Well, I've got dates and time stamps, so yes, I've got the receipts to show LuAnn," she added.

The second part of the big showdown airs next week. We can't wait to see what goes down!