With polygamy, jealousies and tensions over sharing a spouse seem inevitable. However, on last night's episode of Big Love, we discovered that jealousy can also extend to the friendships that form between "sister wives."

We knew that the minute that Bill took his fourth wife Anna, that things just wouldn't work out. (Because they'd definitely have to change the intro to the show.) As each one of Bill's wives bonded with Anna, jealousy over which woman was better friends with her began to set in, and elementary-school-type antics began to emerge. In this clip above, Nicki uses classic "mean girl" mind games to get Margie on her side.

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