From the Godfather movie:
Kay: Michael, why did you come here? Why? What do you want of me after all this time? I've been writing and calling.
Michael: I came here because I need you, because I care for you.
Kay: Please, stop it Michael...
Michael: Because, I want you to marry me
Kay: It's too late.
Michael: Please, Kay. I'll do anything you ask anything to make up for what's happened to us. Because that's importatnt, Kay. Becuase what's important is that... we have each other. That we have a life together....
I didn't understand the exact meaning of we have each other and That we have a life together. The first thought about that was that it has something todo with possessing each other, but it sounds totally nonsensical.