Roommate, The (2011, U.S.A.)

She’s cute, loyal and psychotic. And, unfortunately for college freshman Sara (Minka Kelly) she’s THE ROOMMATE.

When Sara arrives at school, she finds new love with Stephen (Cam Gigandet).  She also becomes good friends with her roommate Rebecca (Leighton Meester).  However, things soon get creepy.   Her new best friend is obsessive, unbalanced … and might be a killer!