The Rosie Effect by Graeme Simsion is the sequel to The Rosie Project.
As mentioned in my previous book review of The Rosie Project, Professor Don Tillman goes on a quest to find a perfect partner. He even prepares a questionnaire to sieve out potential partners. He has a weekly meal plan which he tries not to deviate from. Critics have compared Prof Don to Sheldon Cooper of Big Bang Theory, the American sitcom. While trying to help Rosie, a PHD student find her biological father, Prof Don unexpectedly falls in love with her and vice versa.
The sequel, The Rosie Effect takes their marriage to the next level when Rosie finds herself pregnant with Bud (Baby Under Development) after moving to NY. Don gets busy learning the basics of becoming a father but his unique research style gets him into trouble with the law. While juggling between looking after their landlord's beer refrigeration unit in his apartment, staying on the right side with his social worker, Lydia and doing his baby research, Rosie finds him disconnected as a potential father (he fails to attend prenatal classes with her because he had assumed he wasn't needed) and thereby unsuitable to be Bud's father. She leaves for Australia seeking seperation from Don.
I 'll not divulge any further as I will then be giving away the ending. Overall, I found this book written in the same tone as the first. But I did find it a bit of a drag. Plot was a little sluggish and the jokes were not funny as the first novel. I guess the novelty of the first book wore off. Honestly, Mr Simsion shouldn't have written the second book. He should have just stopped at the first. My advice to you is - Only read the first book and treat it as a stand alone. You won't miss The Rosie Effect.
If you are still keen on it, get it online at Amazon.com