It looks like things are already starting to heat back up on The Hills, and the sixth season hasn’t even started yet! Kristin Cavallari – who we all know by now is joining the cast next season – was spotted out at STK last night with Audrina’s ex-boyfriend Justin Bobby Bresica.

The question is, what was she doing with him? Was it a staged publicity stunt? Or is she going to try and move in on Audrina’s ex? (Which admittedly would make for some juicy drama on the show).

Tags: Candids, gossip, justin bobby, Kristin Cavallari