This song is about being young and in love and not grasping the opportunaties you're given in life.

It's about a poor boy who falls in love with his best friend, but he's affraid to tell her because then he might loose her friendship

During wartime they are separated and the boy leaves home to get infirmation of her whereabouts

Years later he finds her married to another man and he wishes he'd had the courage to approach her love back then.

He also gets married to have peace in his heart, but he knows his feelings for her never leaves him.