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Who knew! I thought they were all BFFs even when they're not shooting? (Kidding.)

The chillest of the reality TV show cast - Kristin Cav - was spotted lunching in Bev Hills yesterday afternoon with a non-cast member. Think she'll pull a Lauren Conrad and disappear for a bit once the show ends?

From the looks of these pix, Kristin's totes bored of her glamorous life: