Y/n and Bucky hate each other in public. You both argue, insult each other, fight. But behind closed doors, you love each other deeply. You look after each other, care for one another, love each other. But it’s a secret you’re keeping from the Avengers. He will sneak over to your room at night and leave early in the morning or vice versa. It works, you get the best of both worlds. He calls you “doll”, “darling” or “sweetheart” when you’re alone together.