Another overhyped less then average film. Although the acting is top level with astonishing performance by Tom B, Honor SB and Co, the script pictures pretty realistically abusive relationship, addiction and codependency. So it might be of interest to psychologically inclined audience.
However, in my opinion main weakness of this film are dialogues. And in the film in which nothing much happens you need dialogues to keep attention and not to bore the hell out of the audience. Now, the plot is pretty standard and you know from an early start where is this all going to end. I'd say that just a few strong dialogues will make all the difference and break otherwise pretty plane narrative.