I've been in a eerily similar relationship. After I graduated college with a BS in Biochemistry, I thought I'd take a year off & save up some money and apply for graduate school the following year. Instead, I got bored really quickly and while I was partying with a few friends, this guy (now my ex) asked if I'd wanna experience the best kinda high so I let him shoot me up. From there, we isolated ourselves not only from friends but I was told not to be in contact with my mom.
Yes, this all sounds crazy, especially with such a well-rounded person as myself but I have always had underlying mental illness i.e. depression and major anxiety disorder; I was self-medicating. I've been clean since I saw my ex leave for prison in Feb. '12. Turns out he's a diagnosed sociopath and I was only 1 of his countless "usees".

Sorry, I haven't seen the movie. I was only noticing the striking resemblance between the actress and Sienna Miller.

Why can't she go home? Or why doesn't she go home?
"He who swaps his liberty for the promise of 'security' deserves neither." Ben Franklin