I do know now.
Bleddy memories. A song, a word, a book, an act, a character in a book, a dream, anything... 'Makes you find yourself thinking, recollecting and smiling to yourself about something that happened so long ago. So very very long ago. Seventy years ago. Smiling at the person you were then... Smiling at the feeling that you feel zing through you. Just like it did, back then.
And then you find a damn tear thats found it's way out, no matter how hard you tried to stick to the good part of the memory. For what had been. What could have been. And what never will be, ever again.
For just a fraction there, you feel something squeeze your insides. A slight pain that flits across.
And just like that. It's all gone. And all that your left with, is empty space.