Love and Biology at the Center of the Universe Book

I really want to rate this one 2 1/2 stars, but I'm rounding up. I really liked an earlier book by this author and was happily suprrised to find this other novel by her. I saved it for vacation as a mindless treat and it worked, more or less. I thought the premise was pretty ridiculous (middle aged woman married 20+ years leaves her husband after finding out he is almost-cheating on her, without even a 10 minute discussion with him, and runs off to Seattle). Despire tthat, it was kind of interesting to see what she decided to do with herself after suddenly picking up and leaving her whole life behind. The one part of the book I wish had been edited out (in addition to the kind of gross love scenes) was the nasty daughter character. She was unbelievable and added nothing to the story. Every time she appeared, it made me want to stop reading.