The Sense of an Ending

The Sense of an Ending (2011) by Julian Barnes. Maybe it's because it's a British book, but I just don't quite "get" this novel. The protagonist, Tony, has an entire life by the time you get to the end of the book. An old love, Veronica, comes back to haunt him when an old friend, Adrian, commits suicide. The big reveal comes about when you find out that Veronica's mother had a child by Adrian, and that Veronica still has a relationship with the (now adult) child. But I still can't quite figure out why Veronica is so furious with Tony. What did he do that was so wrong? He sent her and Adrian a rather nasty letter sometime in the past, but would she attach so much importance to it? I don't get it. I'm sure it makes sense to some people, but I can't figure out this book, and this is the third time I've read it. It's definitely a good book, but it's ultimate meaning eludes me. I will look forward to discussing it in the book group that I plan to attend. Grade: B