That could be The Night We Never Met with Matthew Broderick.
A 1990's movie about a New York apartment which has a number of people renting on a time-share basis e.g one resident with use the apartment on mondays and tuesdays and another resident with have the apartment for the rest of the week. I'm sure that there are at least three different individuals - all young professional people.
For some reason all of the individuals time-sharing the apartment never meet or only very briefly meet. Then one resident starts noticing that a fellow female resident enjoys the same interests e.g reads the same book. He tries to meet up with her by leaving messages in the apartment - or something similar.
That could be The Night We Never Met with Matthew Broderick.