Here we go again — another couple is just pretending for The Hills. On the reality show, Kristin Cavallari, 22, is dating Audrina Patridge’s ex, Justin “Bobby” Brescia, but according to an insider, the romance isn’t real.

Shocking, isn’t it?

The insider says that Kristin — whose rep denies the story — has actually been secretly seeing LA-based businessman Sonny Smith for the past few months, but she has kept that relationship under wraps.

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“Kristin and Sonny are an item, but he knows that she has to pretend to date Justin Bobby if she wants to stay on The Hills,” her pal says. “It’s a complicated situation.”

When asked if they’re dating, Sonny told In Touch, “We have been friends for a while, and yes, we hang out.”

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