…home. Treats them as they were alive.

I remember these scenes.

I think its a british drama shot post 2000, maybe 2006

A lonely young man living with his mother, somewhat wealthy home, he is constantly on computer online in chat rooms and thinking about his dull life and interested in suicide.

He decides to commit suicide and drives in a car to the forest do it but is disturbed by a sound of a van full of people including children, he observes what is happening and sees an older man connecting a hose from exhaust to window to set up a group suicide.

After seeing other people doing it, he forgets about killing himself and instead starts to track more people with the same suicidal intentions and brings several dead bodies on different occasions home and kind of cares for them and talks to them until they start to smell bad because of decay. He takes one of them, a young girl body home and treats it like she is still alive.

Another scene is when he meets this woman and they agree on a date to commit suicide together, they drive somewhere and while they prepare and do it he bails on her and i think he also brings her body home after.

At the end he meets a beautiful depressed brunette woman who also wants to die and they fall in love and cancel the suicide plan.