I saw this tonight...along with about 5 other people...not sure what that was about, but then the whole multi-plex seemed dead.
Well, I never thought Keanu and Sandra had good chemistry back in their Bus days...mostly him looking as emotional as a mackerel.... so they have marginally better chemistry in this one, so far as I can tell. I was really disappointed as I loved the concept. The plot was kind of confusing at times (someone explain what was in the attic that her letter referred to at the beginning as I missed it, please) ( and also how she knew that letters were hidden under a loose board in the bedroom when she was there with her boyfriend after she'd given up on Keanu [that's not really a spoiler, believe me], as I didnt get it --did she hide them there herself?). And the logistics of how the whole thing worked were beyond me after a while...she would have been having to make 8 trips a day to the lake to carry on some of those "conversations" I would have thought... I like my SF to be logical... but I could have overlooked all that with better chemistry. Pooh. The writing seemed good (other than the plot line confusion) ... it was just the delivery.
And I know some people liked their chem... so if you have in the past you'll probably like this, but if not...not.