I had read the book which shares the name, but it seems they have mixed a few stories together as I am sure that one was just about a rat husband abandoning his wife and kids. He wasn't all that likeable in the book, though it was well written. Again, he's not overly likeable, but the movie gives him a little more depth and interest. Not that his actions are explained here either.
Clare was more relatable and sympathetic. Still not exactly a nice person, but you could see she was going through something. As is the male lead, I guess. As with the book, I felt the underlying theme is awareness of mortality and fear of missing out. It's not overt, but that's what I got the sense of with these two characters. Both made poor choices with spouses (not that there seems to be anything badly wrong with either, but they were just not a good fit for this pair). Both felt depressed and trapped. Both made yet another poor choice searching for something elusive in their lives. Honestly I think being middle aged helps you to "get" these characters. I'm sure in my 20's I'd have watched this and thought the pair of them were horrible. I still can't condone their behavior, but I find I can see where it stems from and as such this was a decent watch for me. I wouldn't recommend it for all.
Good performance by Kerry Fox. Mark Rylance is irritating, however.
I knew a bit about Jay's personal life in this film. Two kids and an ex-wife, works as a head bartender, befriends a gay man who gives honest suggestions about Jay's personal affair, another friend who keeps crashing by his place, and Jay's frustration dealing with loneliness. This film wouldn't be so bad if their was some sort of connection between the main character Jay and Claire but there isn't really and left me with the feeling of hollowness. The raw sex becomes reptitive and dull since it's clear there is no real intimacy between the two lonely souls. Sad.