When it comes to sister-in-law Teresa Giudice, Melissa Gorga's guard is up -- permanently.
Singer and mother of three Gorga, 33, opens up in the new issue of Us Weekly about the shocking final season four episodes of Real Housewives of New Jersey -- in which Giudice, 40, plots with Kim DePaola to expose Gorga's supposed stripper past at a Posche fashion show.
"Anyone with two eyes can see that it was a complete setup," Gorga tells Us of Giudice's behind-the-scenes maneuvering to suggest Gorga went topless at Lookers Gentlemen's Club in Elizabeth, NJ -- where Gorga worked as a bartender who kept her clothes on at all times in 2003. "Lookers was not even a strip club," Gorga adds.
Although the ugly incident happened over a year ago, "Watching the episode brought back so many emotions," the "I Just Wanna" singer says. "I was sick. It makes me want to stand in front of Teresa and scream at her. It makes my skin crawl."
The duo have had numerous confrontations since then -- including a "crazy" reunion -- and Gorga says she'll never trust Giudice again.
"If she admitted she set me up, I would hear her out. But if I forgave her, who's to say she wouldn't strike again? And who knows if it's not going to be more desperate next time, with her planting crazier stories. Why should I trust her? I'm not going to take the chance of letting her hurt me," Gorga vows. "I'm officially done.
Which makes the prospect of filming a fifth season of their Bravo smash more than a little daunting, she admits to Us.
"It's going to be difficult," says Gorga, who shares Antonia, 7, Gina, 5, and Joey, 2, with husband (Teresa's brother) Joe Gorga. "I don't know how I'm going to handle it. I'm not even ready to be in the same room with her right now. I'm seriously not ready."