What a horrific ridiculous disaster....
..for a number of reasons including:
1. Diane Keaton's far too old and irritating to attract someone like Keanu Reeves
2. We're supposed to believe Keanu Reeves as a doctor; love Bill and Ted, Parenthood and the Matrix, but let's admit the man has his limits
3. Jack Nicholson with Amanda Peet; I'll make allowances cos he's Jack Nicholson
4. Said allowances are rendered irrelevent by the fact that nobody gives their blessing to share any man with their own mother
5. Nicholson/Keaton sex scene provokes nausea...
6. And finale results in actual vomiting. Its too sentimental; suspending disbelief long enough to assume Keaton character could have a meaningful connection with Keanu Reeves, she sure as sh*t wouldn't give that up. And try as I might to suspend said disbelief, i can't think of a more unlikely couple with less chemistry.
Cheers :)