Again: Many spoilers ahead.
At first, I kind of liked this movie – the two lead characters are well played, and so is their relationship as it develops through the meandering memories and the developments in the supposedly real world. It’s adequately somber. The twists towards the end were a bit obvious in my opinion – of course she was luring him to the house and setting him up, and of course these were his memories, with the distant guy watching in precisely the way the main character explains at the beginning.
Unfortunately, once you start to think about the plot, it falls apart.