Love Actually (2003)

Continuity mistake: Juliet arrives at Mark's flat and brings banoffee pie with her, wanting to see the wedding video. She slips the video into the VCR and places the open pastry box on top of the TV stand. As she takes her jacket off the pastry box is gone, yet in the next shot of the TV the box is right next to the remote, which then changes position in the last shot when the remote disappears. The TV is in the center of the stand in some shots, but to the left of the stand in other shots. The video cassettes, etc., change/alter their position within these shots as well. (00:53:10)

Super Grover ★

Harry: Tell me, exactly, how long it is that you've been working here?
Sarah: Two years, seven months, three days and, I suppose, what, two hours?
Harry: And how long have you been in love with Karl, our enigmatic chief designer?
Sarah: Ahm, two years, seven months, three days and, I suppose, an hour and thirty minutes.
Harry: I thought as much.
Sarah: Do you think everybody knows?
Harry: Yes.
Sarah: Do you think Karl knows?
Harry: Yes.
Sarah: Oh that is bad news.
Harry: Well I just thought maybe the time had come to do something about it.
Sarah: Like what?
Harry: Invite him out for a drink and then after about twenty minutes casually drop into the conversation the fact that you'd like to marry him and have lots of sex and babies.

Trivia: Any viewers outside of Britain might not get the joke when Billy Mack isn't sure which one is Ant or Dec. They are very well known in the UK, and dominate Saturday night telly. The joke refers to the fact that even though they are popular, a lot of people don't know which one's which.

Question: Even if Karl and Sarah don't get together at the end, I couldn't see what exactly was stopping them?