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Real Housewives Sisters Caroline, Dina Manzo No Longer Speaking

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No longer thick as thieves?

Sisters and former Real Housewives of New Jersey costars Caroline and Dina Manzo are no longer speaking — and they have Teresa Giudice to thank.

On Sundays's reunion show, all eyes will indeed be on Giudice, 39, who has officially been iced out by her costars, one-time pal Caroline Manzo, Jacqueline Laurita, Giudice's cousin, Kathy Wakile and sister-in-law, Melissa Gorga.

Related: VIDEO: Teresa tells Melissa:

"Teresa is a wolf in sheep's clothing," Manzo, 50, tells Us Weekly of Giudice, who slammed her former friend in her Fabulicious! cookbook, calling her "as Italian as the Olive Garden," and insulting her son, Christopher.

After spending much of Housewives' season 3 attempting to mend Giudice's longtime rift with her sister-in-law, Manzo realized Giudice had no intention of making nice. "It was all a charade," Manzo tells Us. "And we were all pawns in her horrible game."

Related: VIDEO: Teresa lashes out at her brother for christening brawl

As a result, Manzo says she behaved badly toward the Gorga family, without getting to know them first. When she got to know them and become friendly, Giudice flipped. "[A friendship] was not what Teresa wanted," she tells Us. "I welcomed the bad guys, so I became the bad guy."

"When it served her purpose, she was my friend," Manzo reasons of Giudice on Sunday's reunion.

Related: PHOTOS: Unbelievable Real Housewives moments

And Giudice's behavior hasn't just affected Manzo's relationship with the Gorgas. On part one of the reunion, she reveals that her bond with her sister Dina, a Giudice ally, has officially broken down and that the pair no longer speak.

"[Teresa] is hurting people to bring herself up," Manzo fumes to Us, adding that she sees little chance of a reconciliation. "We all make mistakes and can be cruel and heartless in the things we say and do, but [Teresa's behavior] is different — premeditated. To sit there and try to hurt someone…assault their character, it's unacceptable. I'm done."

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