What Kate did (Spoilers)
What's your take on the ending? Personally, I think Kate ended the marriage or at least realised her feelings for Geoff had changed after all that had happened inc - discovering his ex was pregnant. I also think Geoff admitting had his ex not died, he would still be with her, is a slap in the face for Kate and the ending (to me) with her pulling her hand away from him, is Kate "pulling away" from the marriage. Such a sad, although, open ending. Geoff clearly never got over his first love and while I tried to feel for him, he seemed to be living a life he doesn't want, always complaining, feeling isolated during the mundane conversation with his friend at the cafe, I found him to be rather selfish.
I also thought it was going to be revealed that the death of his ex wasn't an accident and she was murdered.