The Real Housewives of the O.C.

Who would've thought The Real Housewives of Orange County's Gretchen and Tamra would ever be friends?

Throughout the last three seasons of the Bravo series, the castmates have been at each other's throats. From Tamra probing into Gretchen and then-fiancé Jeff's relationship, to Gretchen's famous "evil eye" comment, the women have barely been anything but enemies. When Season 7 picks up, that will finally change.

"I was beyond shocked [we reconciled], but at the same time I really went into the season knowing I wanted to move past it," Gretchen tells TVGuide.com.

But with Gretchen and Tamra cooling off, the drama heats up with Vicki. (Just watch the end of this clip.) Watch the interview below for more on their upcoming showdown and what set Gretchen over the edge.

The Real Housewives of Orange County airs Tuesdays at 9/8c on Bravo.