Bits and Pieces by lenija
There's always the possibility that he won't remember her tomorrow, a metaphorical sword hovering over her head. Not that they've been tinkering with his memories during the time she's known the Winter Soldier, but Natasha knows what they must have done before. She knows, because she has a pretty accurate idea of her employer's tactics. And she knows, because last week he woke up in the middle of the night, or almost woke up, and began talking about the forties. Shortly, melancholy look at Bucky's time with Natalia as the Winter Soldier.