What is the possible relationship between the speakers?

Elina: What’s the matter with you, then? It seems that you axe hostile and miserable.
Johnson: Not me. It’s us, to be frank.
Elina: What do you mean by "us"?
Johnson: Well, I remember that we enjoyed talking to each other before we got married.
Elina: What do you mean? Aren’t we talking now?
Johnson: Oh, yes, but we used to do so much together. We went for a walk every morning. We enjoyed reading magazines together.
Elina: But we still watch television together, don’t we?
Johnson: But we used to go to the cinema together. I still remember you cried a lot when watching some sentimental films.
Elina: That’s silly. You are being totally ridiculous thinking of these things.
Johnson: And we used to go to parks on Sundays and feed birds and fish there. You were so wonderful at that time.
Elina: But we never used to argue. Don’t you remember? (sound of the door opening).
Johnson: Where are you going?
Elina: Back to live with my parents. That’s something else we used to do before our marriage. Remember?