I'm only 5 minutes into the movie and it's already given me a sour Hollywood taste. The wife abruptly, out of the blue, asks her husband whether he'd want to sleep with someone else. Of course, there is only one PC answer, but then she is suddenly cold and distant, as if she wishes she had another lover, RIGHT IN FRONT OF HER HUSBAND. Outside of Jerry Springer, this would just never happen in real life, but Hollywood doesn't care about portraying true to life situations, it just plows right along, rushing to get to what I presume is the "perfect lover" that she comes across and has all her orgasms she never knew were possible. We'll see how this goes.
As with the other reviewers, I rented the movie because of the actors Linney and Neeson, but I certainly expected launching into an affair to be done in a more believable way. The lover is predictably a "Latin Lover" - why not just have them all be over the top Fernando Lamas types, if we're going to be so predictable. See Diane Lane's "Unfaithful" for a more riveting account. Maybe for a change have the lover be a Norwegian?