Okay, I know I'm late but here's my take on it.
Heidi: Liar, lacks loyalty, fake. My mouth dropped to the floor when Lauren and her were discussing what had happened on Jen's birthday, and Heidi claimed that she "tried to stop it". Bitch please. You were encouraging her to do it. Right after the girl bought her diamonds for her birthday. The audacity of some people. Does she not realize that eventually Lauren is going to watch this?
Lauren: Good friend, but way too involved in Heidi's romantic affairs. You can only advise someone for so long. If Heidi wants to be with that jerk face, let her. She'll learn when she gets her feelings hurt--again.
Audrina: Nice girl. Maybe she'll be a better friend of Lauren's. Only time will tell.
Spencer: Bleh!