Searching for a movie...(help)

This thread is for the people that forgot the name of a movie and are looking for it.
Describe what you remember about the movie and maybe someone can help you out ^.^

for example; (i am searching for this movie though )

It's a movie with Keanu Reeves and with..uh..another woman and i just can't remember her name.
The movie is about a distant relationship or that they live in two different worlds.
Something like that.
Does anyone know the name of this movie?