Bucky had the feeling that he'd done the wrong thing, said the wrong words. Vague and unsettling, but he didn't know what it was well enough to fix it when he'd just been telling the truth. He didn't want to try to walk that back because Natasha felt like one of those rare safe space where he could just tell the truth. She knew how he was, she'd asked him for help once, helped him in turn. He didn't have to try to be anything else, so he'd just said how he felt, even if he'd tried to find a way to say it that sounded ... right.
He probably shouldn't be surprised if it hadn't worked. Bucky wasn't much good at right words and good moments anymore.
But the taut line of her shoulders had relaxed by the time she turned back, and Bucky didn't know if that was her putting a game face on, or her legitimately calming back down. Either way, it was a sign that said leave it alone, so he did. "Thanks," he said, taking it. He hunted around for the sugar and then dumped in a more than healthy amount. Bucky used to drink it black and bitter. The black stayed, but now he had sugar, and his sweet tooth had always been there - just not that indulged as a kid. Like the books and the food, it was one of those little defiant indulgences he took for himself.
He shook his head. "Least I could do," Bucky said, taking a sip of the coffee with a little sigh of pleasure, then setting it down to dish up her food, handing it over to her before reaching for the coffee again. He'd eat, but coffee always took priority.
Bucky didn't know what to do, a little. They were alone, but last night hung over them, and now so did the misstep he'd just taken, but still meant. He couldn't leave yet probably, and he wasn't in a hurry to NOT be around her ... and there was a nagging, probably stupid part of him that didn't know if he wanted to leave her alone. She'd started to be upset, and she'd shut it down. He couldn't tell if the shut down was really calming down, or just being good at faking it. He'd go if she wanted it, sure, but on his own ... Bucky didn't think he did, yet.
So he just talked, instead. "I got a book," Bucky said. "Not last night - didn't see any to grab. But I saw one a month ago and just ordered it since I couldn't nab it. It's got a runaway prince with a cursed dick who has to find a unicorn. I don't think the author knows how hands work, it's great."