no matter how long the day is (i'll come home to you) (слэш)

Steve’s spent an hour along Portobello Road before he sees the paparazzi on the left side of the street, trying to be inconspicuous by a street lamp. He crosses the street and ducks into the first store he sees, tucked behind a screaming red door and under a blue and white striped awning.
He listens, feet planted in front of the door, shoulders tense, as he looks around the shop. Row upon row of books are on the shelves in front of him, the wood creaking under their weight. Behind the counter is a dark haired man wearing a jacket, elbow on the table, stubbled chin on one hand, gloved left hand flipping the pages of a book.
No one follows Steve in.
Or, the one where Captain America travels the world, learns how to be Steve Rogers again, and meets Bucky Barnes along the way.
Also: the one where two old souls fall in love over young adult books, long distance calls, and texting at strange hours of the day.