We're like strangers

[Alexander] — Are you sure you know when I'm happy?

[Katherine] — No, ever since we left on this trip I'm not so sure. I realised for the first time that we... we're like strangers.

— That's right. After eight years of marriage, it seems like we don't know anything about each other.

— At home everything seemed so perfect, but now that we're away, alone...

— Yes, it's a strange discovery to make...

Voyage en Italie, Roberto Rossellini (1954)