love the film, completely realistic in terms of the premise just shows do we really know ours partners. and i see a lot of confusing for the ending, i was at first confused too but then i understood the ending was all about that one choice we make. at the start the couples had a choice to play the game or not not knowing what will happen as a result so we got two versions of that choice, one we start how each partner`s secret impacted their partner and the second choice we saw what would have happen has they never chose to play the game.