“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. It’s a complicated situation,” an insider says.

What’s complicated about it? She’s a famewhore that needs to lie to keep her job!

Sonny himself didn’t confirm or deny their relationship, but he did say that they “have been friends for awhile” and they “hang out.”

We bet you do more than that, Sonny!

[Image via WENN.]