Name of a black comedy film, where a guy moves in with a crazy girl..
 

So there’s not much to go on, but I’d be hugely grateful if anyone can help. So it’s a black comedy where a guy moves in with a girl, and she turns out to be crazy, poops in his porridge. He buys he roses, but because there is only 11, she says he is worse than a rapist ... again not much to go on, but please help if you know anything.
Thank you in advance ...