Ending Alternative! Did somebody notice this? (Spoiler)
Made an account just to say this.
When Lucas picks picks up Klara and walks her across the room, notice how she clenches onto him tighter and gets happy. She then does the same smile she did when she "fell in love with him" the first time.
To me, that whole scene is the equivalent of horror movies' "it's still alive!" endings. I thought that was her falling in love with him again, which means she could possibly get angry when he "rejects" her and lie about him again.
It's a depressing ending!
That whole scene I was thinking, "NO STAY AWAY FROM HER!".