Originally enemies due to MK exposing Julia's true personality in S1, to BFFs that some say are more than just "roomates".
MK (Mary Kate) is a smart mischievous sarcastic thief and Julia is a vicious backstabbing influencer. To avoid being eliminated in S2 they made an alliance, worked together and over time grew a genuine bond with each other even tho neither of them wanted to make friends. They often used the confessional stall together. The 2 are hated by almost everyone in the cast.