The Real Housewives of New York stars Jill Zarin and Alex McCord hash it out once again on the reunion special Thursday.

McCord, 36, echoes the argument she made throughout the season that Zarin, 46, is a mean girl who has made nasty remarks about her family.

"For three years, you've tried to tell me how to live my life, and I don't like that," McCord fumes.

Zarin then interrupts: "How?! Give me an example."

She keeps trying to talk over McCord, but McCord stands her ground.

"Every time you feel threatened by me or someone else ... you fight back and you fight dirty," she says, accusing Zarin of planting false stories to tabloids about her castmates.

Zarin then accuses McCord of doing the same thing. By the end, the two fail to reach any resolution.

"I'm not going to call you to apologize -- we're not friends! We never were!" Zarin snaps.

McCord breezily replies, "Basic civility is a good thing."