This picture says it all, doesn't it? Romantic love sacrificed to a great cause. The noble fine gesture. Country before self and all that.
Was Humphrey ever so tough and manly, Ingrid ever so fragile?

The thing is, in real life Ingrid Bergman towered over the diminutive Humphrey Bogart.
So much so that he had to wear strapped on platform shoes. Here is a shot taken of his feet, relaxing between takes of the unforgettable movie, Casablanca:

Things are not always what they appear, n'est pas? Humphrey tottering around on these kinda spoils the image of the tough, shoot from the hip guy with the heart of gold.
And I truly wonder how they both kept straight faces during the filming.