I agree with Kris. Lo is jealous of Audrina. When you look back on the episodes Lo rolls her eyes whenever Audrina invites them to things or whenever Audrina brings up Justine Bobby. Lauren should watch out, Lo kind of reminds me of Hieidi.

Lo is not jealous of Audrina, she just really <3's lc and doesn't want to let anyone get between them. i think lo is trying her best to b friends with audrina. its totally cool that lo moved in wit lc. the hills will b so fun 2 watch w/ her!!!!

I think Lo is extremely jealous of Audrina and is trying to push her out of the picture by being such a mean, cold hearted person.