Question about The Hills Finale;)?

Well.... it all started on the first show Laguna Beach, when kristen and LC liked the same boy etc. They have had this drama since then, but i thought they had made up cuz on an episode of the hills, kristen went to LC fashion show crap and they hugged, but i guess theres still tension. Anyways, so yeah thats what that was about. A;lso, audrina was giveing her crustys im guessing cuz kristen was sitting by justin. I bet there will be drama with kristen and audrina next season.